136154405 has 4 divisors (see below), whose sum is σ = 163385292. Its totient is φ = 108923520.

The previous prime is 136154393. The next prime is 136154419. The reversal of 136154405 is 504451631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504451631 = 443 ⋅1138717.

It can be written as a sum of positive squares in 2 ways, for example, as 70576801 + 65577604 = 8401^2 + 8098^2 .

It is not a de Polignac number, because 136154405 - 2²⁴ = 119377189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13615436 + ... + 13615445.

It is an arithmetic number, because the mean of its divisors is an integer number (40846323).

Almost surely, 2^136154405 is an apocalyptic number.

It is an amenable number.

136154405 is a deficient number, since it is larger than the sum of its proper divisors (27230887).

136154405 is an equidigital number, since it uses as much as digits as its factorization.

136154405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27230886.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 136154405 is about 11668.5219715266. The cubic root of 136154405 is about 514.4508615530.

The spelling of 136154405 in words is "one hundred thirty-six million, one hundred fifty-four thousand, four hundred five".