136253429 has 4 divisors (see below), whose sum is σ = 146734476. Its totient is φ = 125772384.

The previous prime is 136253417. The next prime is 136253441. The reversal of 136253429 is 924352631.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (136253417) and next prime (136253441).

It can be written as a sum of positive squares in 2 ways, for example, as 52896529 + 83356900 = 7273^2 + 9130^2 .

It is a cyclic number.

It is not a de Polignac number, because 136253429 - 2²⁴ = 119476213 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 (136253729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5240504 + ... + 5240529.

It is an arithmetic number, because the mean of its divisors is an integer number (36683619).

Almost surely, 2^136253429 is an apocalyptic number.

It is an amenable number.

136253429 is a deficient number, since it is larger than the sum of its proper divisors (10481047).

136253429 is a wasteful number, since it uses less digits than its factorization.

136253429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10481046.

The product of its digits is 38880, while the sum is 35.

The square root of 136253429 is about 11672.7644112267. The cubic root of 136253429 is about 514.5755499829.

The spelling of 136253429 in words is "one hundred thirty-six million, two hundred fifty-three thousand, four hundred twenty-nine".