136432539 has 16 divisors (see below), whose sum is σ = 205438240. Its totient is φ = 89462880.

The previous prime is 136432523. The next prime is 136432553. The reversal of 136432539 is 935234631.

It is a happy number.

136432539 is a `hidden beast` number, since 1 + 3 + 643 + 2 + 5 + 3 + 9 = 666.

It is not a de Polignac number, because 136432539 - 2⁴ = 136432523 is a prime.

It is a super-2 number, since 2×136432539² = 37227675395973042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136432589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39772 + ... + 43065.

It is an arithmetic number, because the mean of its divisors is an integer number (12839890).

Almost surely, 2^136432539 is an apocalyptic number.

136432539 is a deficient number, since it is larger than the sum of its proper divisors (69005701).

136432539 is an equidigital number, since it uses as much as digits as its factorization.

136432539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82907 (or 82901 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 136432539 is about 11680.4340244702. The cubic root of 136432539 is about 514.8009272374.

The spelling of 136432539 in words is "one hundred thirty-six million, four hundred thirty-two thousand, five hundred thirty-nine".