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42030241031 = 192212117949
BaseRepresentation
bin100111001001001100…
…101001010100000111
311000111011022110121202
4213021030221110013
51142034220203111
631150341533115
73015356103602
oct471114512407
9130434273552
1042030241031
1116908a80199
12818ba1419b
133c6a88750c
14206a099339
15115ed6eb3b
hex9c9329507

42030241031 has 4 divisors (see below), whose sum is σ = 44242359000. Its totient is φ = 39818123064.

The previous prime is 42030241027. The next prime is 42030241129. The reversal of 42030241031 is 13014203024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42030241031 - 22 = 42030241027 is a prime.

It is a super-2 number, since 2×420302410312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42030240994 and 42030241012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42030241021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106058956 + ... + 1106058993.

It is an arithmetic number, because the mean of its divisors is an integer number (11060589750).

Almost surely, 242030241031 is an apocalyptic number.

42030241031 is a deficient number, since it is larger than the sum of its proper divisors (2212117969).

42030241031 is a wasteful number, since it uses less digits than its factorization.

42030241031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212117968.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 42030241031 its reverse (13014203024), we get a palindrome (55044444055).

The spelling of 42030241031 in words is "forty-two billion, thirty million, two hundred forty-one thousand, thirty-one".

Divisors: 1 19 2212117949 42030241031