42002920031 has 2 divisors, whose sum is σ = 42002920032. Its totient is φ = 42002920030.

The previous prime is 42002920007. The next prime is 42002920049. The reversal of 42002920031 is 13002920024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42002920031 is a prime.

It is a super-2 number, since 2×42002920031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42002919979 and 42002920006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42002920081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001460015 + 21001460016.

It is an arithmetic number, because the mean of its divisors is an integer number (21001460016).

Almost surely, 2^42002920031 is an apocalyptic number.

42002920031 is a deficient number, since it is larger than the sum of its proper divisors (1).

42002920031 is an equidigital number, since it uses as much as digits as its factorization.

42002920031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The spelling of 42002920031 in words is "forty-two billion, two million, nine hundred twenty thousand, thirty-one".