136121607 has 16 divisors (see below), whose sum is σ = 203623680. Its totient is φ = 89864856.

The previous prime is 136121591. The next prime is 136121633. The reversal of 136121607 is 706121631.

136121607 is a `hidden beast` number, since 1 + 36 + 1 + 21 + 607 = 666.

It is not a de Polignac number, because 136121607 - 2⁴ = 136121591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136121807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21693 + ... + 27254.

It is an arithmetic number, because the mean of its divisors is an integer number (12726480).

Almost surely, 2^136121607 is an apocalyptic number.

136121607 is a deficient number, since it is larger than the sum of its proper divisors (67502073).

136121607 is a wasteful number, since it uses less digits than its factorization.

136121607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49059 (or 49053 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 136121607 is about 11667.1164818047. The cubic root of 136121607 is about 514.4095498418.

The spelling of 136121607 in words is "one hundred thirty-six million, one hundred twenty-one thousand, six hundred seven".