42992864 has 24 divisors (see below), whose sum is σ = 89622288. Its totient is φ = 20231680.

The previous prime is 42992863. The next prime is 42992869. The reversal of 42992864 is 46829924.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42992863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38972 + ... + 40059.

It is an arithmetic number, because the mean of its divisors is an integer number (3734262).

Almost surely, 2^42992864 is an apocalyptic number.

It is an amenable number.

42992864 is an abundant number, since it is smaller than the sum of its proper divisors (46629424).

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

42992864 is a wasteful number, since it uses less digits than its factorization.

42992864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79058 (or 79050 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 42992864 is about 6556.8943868267. The cubic root of 42992864 is about 350.3204249289.

The spelling of 42992864 in words is "forty-two million, nine hundred ninety-two thousand, eight hundred sixty-four".