42905639337931 has 4 divisors (see below), whose sum is σ = 42912734703552. Its totient is φ = 42898543972312.

The previous prime is 42905639337929. The next prime is 42905639338019. The reversal of 42905639337931 is 13973393650924.

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 42905639337931 - 2¹ = 42905639337929 is a prime.

It is a super-2 number, since 2×42905639337931² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42905639337031) 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, 3547673740 + ... + 3547685833.

It is an arithmetic number, because the mean of its divisors is an integer number (10728183675888).

Almost surely, 2^{42905639337931} is an apocalyptic number.

42905639337931 is a deficient number, since it is larger than the sum of its proper divisors (7095365621).

42905639337931 is an equidigital number, since it uses as much as digits as its factorization.

42905639337931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7095365620.

The product of its (nonzero) digits is 99202320, while the sum is 64.

The spelling of 42905639337931 in words is "forty-two trillion, nine hundred five billion, six hundred thirty-nine million, three hundred thirty-seven thousand, nine hundred thirty-one".