71688942 has 32 divisors (see below), whose sum is σ = 171564960. Its totient is φ = 22057920.

The previous prime is 71688941. The next prime is 71688961. The reversal of 71688942 is 24988617.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71688941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50359 + ... + 51762.

It is an arithmetic number, because the mean of its divisors is an integer number (5361405).

Almost surely, 2^71688942 is an apocalyptic number.

71688942 is an abundant number, since it is smaller than the sum of its proper divisors (99876018).

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

71688942 is a wasteful number, since it uses less digits than its factorization.

71688942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102145 (or 102139 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 71688942 is about 8466.9322661753. The cubic root of 71688942 is about 415.4168009724.

It can be divided in two parts, 7168 and 8942, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 71688942 in words is "seventy-one million, six hundred eighty-eight thousand, nine hundred forty-two".