71499942 has 32 divisors (see below), whose sum is σ = 159400800. Its totient is φ = 23756544.

The previous prime is 71499929. The next prime is 71499973. The reversal of 71499942 is 24999417.

It is a happy number.

71499942 is a `hidden beast` number, since 71 + 499 + 94 + 2 = 666.

It is a super-2 number, since 2×71499942² = 10224483412006728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16234 + ... + 20162.

It is an arithmetic number, because the mean of its divisors is an integer number (4981275).

Almost surely, 2^71499942 is an apocalyptic number.

71499942 is an abundant number, since it is smaller than the sum of its proper divisors (87900858).

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

71499942 is a wasteful number, since it uses less digits than its factorization.

71499942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277 (or 4271 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 71499942 is about 8455.7638330313. The cubic root of 71499942 is about 415.0514128011.

The spelling of 71499942 in words is "seventy-one million, four hundred ninety-nine thousand, nine hundred forty-two".