136253121 has 4 divisors (see below), whose sum is σ = 181670832. Its totient is φ = 90835412.

The previous prime is 136253101. The next prime is 136253137. The reversal of 136253121 is 121352631.

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.

It is a cyclic number.

It is not a de Polignac number, because 136253121 - 2⁷ = 136252993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136253091 and 136253100.

It is not an unprimeable number, because it can be changed into a prime (136253101) 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, 22708851 + ... + 22708856.

It is an arithmetic number, because the mean of its divisors is an integer number (45417708).

Almost surely, 2^136253121 is an apocalyptic number.

It is an amenable number.

136253121 is a deficient number, since it is larger than the sum of its proper divisors (45417711).

136253121 is an equidigital number, since it uses as much as digits as its factorization.

136253121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45417710.

The product of its digits is 1080, while the sum is 24.

The square root of 136253121 is about 11672.7512181148. The cubic root of 136253121 is about 514.5751622510.

The spelling of 136253121 in words is "one hundred thirty-six million, two hundred fifty-three thousand, one hundred twenty-one".