71331842 has 8 divisors (see below), whose sum is σ = 107057916. Its totient is φ = 35645872.

The previous prime is 71331823. The next prime is 71331859. The reversal of 71331842 is 24813317.

It can be written as a sum of positive squares in 2 ways, for example, as 69538921 + 1792921 = 8339^2 + 1339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×71331842² = 10176463366225928, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5093 + ... + 12984.

Almost surely, 2^71331842 is an apocalyptic number.

71331842 is a deficient number, since it is larger than the sum of its proper divisors (35726074).

71331842 is a wasteful number, since it uses less digits than its factorization.

71331842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20052.

The product of its digits is 4032, while the sum is 29.

The square root of 71331842 is about 8445.8180184041. The cubic root of 71331842 is about 414.7258885662.

The spelling of 71331842 in words is "seventy-one million, three hundred thirty-one thousand, eight hundred forty-two".