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42020144012 = 22711136429039
BaseRepresentation
bin100111001000100110…
…001000001110001100
311000110110022111010002
4213020212020032030
51142024124102022
631145341303432
73015204221330
oct471046101614
9130413274102
1042020144012
1116903304150
128188564b78
133c68760752
1420689cb7c0
15115e028092
hex9c898838c

42020144012 has 24 divisors (see below), whose sum is σ = 91680314880. Its totient is φ = 16371484560.

The previous prime is 42020143987. The next prime is 42020144039. The reversal of 42020144012 is 21044102024.

It is a super-2 number, since 2×420201440122 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68214212 + ... + 68214827.

It is an arithmetic number, because the mean of its divisors is an integer number (3820013120).

Almost surely, 242020144012 is an apocalyptic number.

It is an amenable number.

42020144012 is an abundant number, since it is smaller than the sum of its proper divisors (49660170868).

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

42020144012 is a wasteful number, since it uses less digits than its factorization.

42020144012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136429061 (or 136429059 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 42020144012 its reverse (21044102024), we get a palindrome (63064246036).

The spelling of 42020144012 in words is "forty-two billion, twenty million, one hundred forty-four thousand, twelve".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 136429039 272858078 545716156 955003273 1500719429 1910006546 3001438858 3820013092 6002877716 10505036003 21010072006 42020144012