136743957 has 60 divisors (see below), whose sum is σ = 240346656. Its totient is φ = 77248080.

The previous prime is 136743917. The next prime is 136743977. The reversal of 136743957 is 759347631.

It is not a de Polignac number, because 136743957 - 2¹¹ = 136741909 is a prime.

Its product of digits (476280) is a multiple of the sum of its prime factors (420).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136743917) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 519808 + ... + 520070.

Almost surely, 2^136743957 is an apocalyptic number.

It is an amenable number.

136743957 is a deficient number, since it is larger than the sum of its proper divisors (103602699).

136743957 is a wasteful number, since it uses less digits than its factorization.

136743957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 404 counting only the distinct ones).

The product of its digits is 476280, while the sum is 45.

The square root of 136743957 is about 11693.7571806499. The cubic root of 136743957 is about 515.1923207937.

The spelling of 136743957 in words is "one hundred thirty-six million, seven hundred forty-three thousand, nine hundred fifty-seven".