71442508 has 36 divisors (see below), whose sum is σ = 137652760. Its totient is φ = 32351616.

The previous prime is 71442493. The next prime is 71442521. The reversal of 71442508 is 80524417.

It is a self number, because there is not a number n which added to its sum of digits gives 71442508.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 39316 + ... + 41092.

Almost surely, 2^71442508 is an apocalyptic number.

It is an amenable number.

71442508 is a deficient number, since it is larger than the sum of its proper divisors (66210252).

71442508 is a wasteful number, since it uses less digits than its factorization.

71442508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846 (or 1821 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 71442508 is about 8452.3670057564. The cubic root of 71442508 is about 414.9402497807.

The spelling of 71442508 in words is "seventy-one million, four hundred forty-two thousand, five hundred eight".