67142972 has 12 divisors (see below), whose sum is σ = 126538776. Its totient is φ = 30989040.

The previous prime is 67142927. The next prime is 67142989. The reversal of 67142972 is 27924176.

It is a congruent number.

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, 645554 + ... + 645657.

It is an arithmetic number, because the mean of its divisors is an integer number (10544898).

Almost surely, 2^67142972 is an apocalyptic number.

It is an amenable number.

67142972 is a deficient number, since it is larger than the sum of its proper divisors (59395804).

67142972 is a wasteful number, since it uses less digits than its factorization.

67142972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291228 (or 1291226 counting only the distinct ones).

The product of its digits is 42336, while the sum is 38.

The square root of 67142972 is about 8194.0815226601. The cubic root of 67142972 is about 406.4435041236.

Subtracting from 67142972 its reverse (27924176), we obtain a triangular number (39218796 = T₈₈₅₆).

The spelling of 67142972 in words is "sixty-seven million, one hundred forty-two thousand, nine hundred seventy-two".