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142301311220 = 22571167600073
BaseRepresentation
bin1000010010000111010…
…0011011000011110100
3111121022020000121021002
42010201310123003310
54312413113424340
6145212230542432
713165234121315
oct2044164330364
9447266017232
10142301311220
1155393420342
12236b4507a18
131055a5a5c03
146c5d11c60c
153a7cca1715
hex2121d1b0f4

142301311220 has 48 divisors (see below), whose sum is σ = 304856794368. Its totient is φ = 55782693120.

The previous prime is 142301311211. The next prime is 142301311223. The reversal of 142301311220 is 22113103241.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 142301311192 and 142301311201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142301311223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62897 + ... + 537176.

It is an arithmetic number, because the mean of its divisors is an integer number (6351183216).

Almost surely, 2142301311220 is an apocalyptic number.

142301311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142301311220 is an abundant number, since it is smaller than the sum of its proper divisors (162555483148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142301311220 is a wasteful number, since it uses less digits than its factorization.

142301311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600320 (or 600318 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 142301311220 its reverse (22113103241), we get a palindrome (164414414461).

The spelling of 142301311220 in words is "one hundred forty-two billion, three hundred one million, three hundred eleven thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 71 142 167 284 334 355 668 710 835 1420 1670 3340 11857 23714 47428 59285 118570 237140 600073 1200146 2400292 3000365 6000730 12001460 42605183 85210366 100212191 170420732 200424382 213025915 400848764 426051830 501060955 852103660 1002121910 2004243820 7115065561 14230131122 28460262244 35575327805 71150655610 142301311220