136177021 has 16 divisors (see below), whose sum is σ = 147498624. Its totient is φ = 125259264.

The previous prime is 136177007. The next prime is 136177033. The reversal of 136177021 is 120771631.

It is not a de Polignac number, because 136177021 - 2¹³ = 136168829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136177061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144865 + ... + 145801.

It is an arithmetic number, because the mean of its divisors is an integer number (9218664).

Almost surely, 2^136177021 is an apocalyptic number.

It is an amenable number.

136177021 is a deficient number, since it is larger than the sum of its proper divisors (11321603).

136177021 is a wasteful number, since it uses less digits than its factorization.

136177021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 136177021 is about 11669.4910343168. The cubic root of 136177021 is about 514.4793443541.

The spelling of 136177021 in words is "one hundred thirty-six million, one hundred seventy-seven thousand, twenty-one".