42639496 has 32 divisors (see below), whose sum is σ = 84722400. Its totient is φ = 20062080.

The previous prime is 42639463. The next prime is 42639511. The reversal of 42639496 is 69493624.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23916 + ... + 25636.

It is an arithmetic number, because the mean of its divisors is an integer number (2647575).

Almost surely, 2^42639496 is an apocalyptic number.

It is an amenable number.

42639496 is a deficient number, since it is larger than the sum of its proper divisors (42082904).

42639496 is a wasteful number, since it uses less digits than its factorization.

42639496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909 (or 1905 counting only the distinct ones).

The product of its digits is 279936, while the sum is 43.

The square root of 42639496 is about 6529.8924952866. The cubic root of 42639496 is about 349.3579958826.

The spelling of 42639496 in words is "forty-two million, six hundred thirty-nine thousand, four hundred ninety-six".