42891972 has 24 divisors (see below), whose sum is σ = 103310592. Its totient is φ = 13836000.

The previous prime is 42891943. The next prime is 42892001. The reversal of 42891972 is 27919824.

42891972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42891943) and next prime (42892001).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57279 + ... + 58022.

It is an arithmetic number, because the mean of its divisors is an integer number (4304608).

Almost surely, 2^42891972 is an apocalyptic number.

It is an amenable number.

42891972 is an abundant number, since it is smaller than the sum of its proper divisors (60418620).

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

42891972 is a wasteful number, since it uses less digits than its factorization.

42891972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115339 (or 115337 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 42891972 is about 6549.1962865683. The cubic root of 42891972 is about 350.0461762205.

The spelling of 42891972 in words is "forty-two million, eight hundred ninety-one thousand, nine hundred seventy-two".