71457842 has 8 divisors (see below), whose sum is σ = 107467776. Its totient is φ = 35635252.

The previous prime is 71457839. The next prime is 71457853. The reversal of 71457842 is 24875417.

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

It is a junction number, because it is equal to n+sod(n) for n = 71457796 and 71457805.

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, 45878 + ... + 47409.

It is an arithmetic number, because the mean of its divisors is an integer number (13433472).

Almost surely, 2^71457842 is an apocalyptic number.

71457842 is a deficient number, since it is larger than the sum of its proper divisors (36009934).

71457842 is a wasteful number, since it uses less digits than its factorization.

71457842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93672.

The product of its digits is 62720, while the sum is 38.

The square root of 71457842 is about 8453.2740402758. The cubic root of 71457842 is about 414.9699344358.

The spelling of 71457842 in words is "seventy-one million, four hundred fifty-seven thousand, eight hundred forty-two".