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142220202 = 23149257619
BaseRepresentation
bin10000111101000…
…01101110101010
3100220121112102220
420132201232222
5242402021302
622040134510
73344565105
oct1036415652
9326545386
10142220202
1173309163
123b767436
1323606a87
1414c6173c
15c7444bc
hex87a1baa

142220202 has 32 divisors (see below), whose sum is σ = 287928000. Its totient is φ = 46829568.

The previous prime is 142220189. The next prime is 142220203. The reversal of 142220202 is 202022241.

142220202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (142220203) 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, 229449 + ... + 230067.

It is an arithmetic number, because the mean of its divisors is an integer number (8997750).

Almost surely, 2142220202 is an apocalyptic number.

142220202 is an abundant number, since it is smaller than the sum of its proper divisors (145707798).

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

142220202 is a wasteful number, since it uses less digits than its factorization.

142220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 142220202 is about 11925.6111793065. The cubic root of 142220202 is about 521.9798806121.

Adding to 142220202 its reverse (202022241), we get a palindrome (344242443).

The spelling of 142220202 in words is "one hundred forty-two million, two hundred twenty thousand, two hundred two".

Divisors: 1 2 3 6 149 257 298 447 514 619 771 894 1238 1542 1857 3714 38293 76586 92231 114879 159083 184462 229758 276693 318166 477249 553386 954498 23703367 47406734 71110101 142220202