71118042 has 16 divisors (see below), whose sum is σ = 142426272. Its totient is φ = 23674320.

The previous prime is 71118037. The next prime is 71118049. The reversal of 71118042 is 24081117.

It is not an unprimeable number, because it can be changed into a prime (71118049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2809 + ... + 12252.

It is an arithmetic number, because the mean of its divisors is an integer number (8901642).

Almost surely, 2^71118042 is an apocalyptic number.

71118042 is an abundant number, since it is smaller than the sum of its proper divisors (71308230).

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

71118042 is a wasteful number, since it uses less digits than its factorization.

71118042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15853.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 71118042 is about 8433.1513682609. The cubic root of 71118042 is about 414.3111269503.

Adding to 71118042 its reverse (24081117), we get a palindrome (95199159).

The spelling of 71118042 in words is "seventy-one million, one hundred eighteen thousand, forty-two".