42931842 has 32 divisors (see below), whose sum is σ = 87539712. Its totient is φ = 14034384.

The previous prime is 42931841. The next prime is 42931843. The reversal of 42931842 is 24813924.

It is an interprime number because it is at equal distance from previous prime (42931841) and next prime (42931843).

It is not an unprimeable number, because it can be changed into a prime (42931841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78213 + ... + 78759.

It is an arithmetic number, because the mean of its divisors is an integer number (2735616).

Almost surely, 2^42931842 is an apocalyptic number.

42931842 is an abundant number, since it is smaller than the sum of its proper divisors (44607870).

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

42931842 is a wasteful number, since it uses less digits than its factorization.

42931842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782.

The product of its digits is 13824, while the sum is 33.

The square root of 42931842 is about 6552.2394644885. The cubic root of 42931842 is about 350.1546038064.

The spelling of 42931842 in words is "forty-two million, nine hundred thirty-one thousand, eight hundred forty-two".