136242972 has 30 divisors (see below), whose sum is σ = 356166888. Its totient is φ = 45414216.

The previous prime is 136242943. The next prime is 136242973. The reversal of 136242972 is 279242631.

136242972 is a `hidden beast` number, since 1 + 3 + 624 + 29 + 7 + 2 = 666.

136242972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136242973) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 209928 + ... + 210575.

Almost surely, 2^136242972 is an apocalyptic number.

136242972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

136242972 is an abundant number, since it is smaller than the sum of its proper divisors (219923916).

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

136242972 is a wasteful number, since it uses less digits than its factorization.

136242972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420519 (or 420508 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 136242972 is about 11672.3164796025. The cubic root of 136242972 is about 514.5623856556.

The spelling of 136242972 in words is "one hundred thirty-six million, two hundred forty-two thousand, nine hundred seventy-two".