71438295842 has 4 divisors (see below), whose sum is σ = 107157443766. Its totient is φ = 35719147920.

The previous prime is 71438295839. The next prime is 71438295913. The reversal of 71438295842 is 24859283417.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49536959761 + 21901336081 = 222569^2 + 147991^2 .

It is a super-2 number, since 2×71438295842² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17859573959 + ... + 17859573962.

Almost surely, 2^71438295842 is an apocalyptic number.

71438295842 is a deficient number, since it is larger than the sum of its proper divisors (35719147924).

71438295842 is a wasteful number, since it uses less digits than its factorization.

71438295842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35719147923.

The product of its digits is 3870720, while the sum is 53.

The spelling of 71438295842 in words is "seventy-one billion, four hundred thirty-eight million, two hundred ninety-five thousand, eight hundred forty-two".