136042453 has 4 divisors (see below), whose sum is σ = 136094220. Its totient is φ = 135990688.

The previous prime is 136042441. The next prime is 136042499. The reversal of 136042453 is 354240631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354240631 = 271 ⋅1307161.

It can be written as a sum of positive squares in 2 ways, for example, as 6036849 + 130005604 = 2457^2 + 11402^2 .

It is a cyclic number.

It is not a de Polignac number, because 136042453 - 2¹⁷ = 135911381 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 (136042553) 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, 21718 + ... + 27271.

It is an arithmetic number, because the mean of its divisors is an integer number (34023555).

Almost surely, 2^136042453 is an apocalyptic number.

It is an amenable number.

136042453 is a deficient number, since it is larger than the sum of its proper divisors (51767).

136042453 is an equidigital number, since it uses as much as digits as its factorization.

136042453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51766.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 136042453 is about 11663.7238050290. The cubic root of 136042453 is about 514.3098216911.

The spelling of 136042453 in words is "one hundred thirty-six million, forty-two thousand, four hundred fifty-three".