71457442 has 16 divisors (see below), whose sum is σ = 128946240. Its totient is φ = 29012688.

The previous prime is 71457431. The next prime is 71457467. The reversal of 71457442 is 24475417.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71457398 and 71457407.

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, 134053 + ... + 134584.

It is an arithmetic number, because the mean of its divisors is an integer number (8059140).

Almost surely, 2^71457442 is an apocalyptic number.

71457442 is a deficient number, since it is larger than the sum of its proper divisors (57488798).

71457442 is a wasteful number, since it uses less digits than its factorization.

71457442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268665.

The product of its digits is 31360, while the sum is 34.

The square root of 71457442 is about 8453.2503807707. The cubic root of 71457442 is about 414.9691601411.

The spelling of 71457442 in words is "seventy-one million, four hundred fifty-seven thousand, four hundred forty-two".