136240453 has 4 divisors (see below), whose sum is σ = 137076448. Its totient is φ = 135404460.

The previous prime is 136240439. The next prime is 136240457. The reversal of 136240453 is 354042631.

136240453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 354042631 = 18433 ⋅19207.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136240453 is a prime.

It is a super-2 number, since 2×136240453² = 37122922067290418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136240457) 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, 417753 + ... + 418078.

It is an arithmetic number, because the mean of its divisors is an integer number (34269112).

Almost surely, 2^136240453 is an apocalyptic number.

It is an amenable number.

136240453 is a deficient number, since it is larger than the sum of its proper divisors (835995).

136240453 is an equidigital number, since it uses as much as digits as its factorization.

136240453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835994.

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

The square root of 136240453 is about 11672.2085742159. The cubic root of 136240453 is about 514.5592143835.

The spelling of 136240453 in words is "one hundred thirty-six million, two hundred forty thousand, four hundred fifty-three".