136120521 has 8 divisors (see below), whose sum is σ = 186399424. Its totient is φ = 88294320.

The previous prime is 136120511. The next prime is 136120559. The reversal of 136120521 is 125021631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136120521 - 2⁷ = 136120393 is a prime.

It is a super-2 number, since 2×136120521² = 37057592474622882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136120511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613045 + ... + 613266.

It is an arithmetic number, because the mean of its divisors is an integer number (23299928).

Almost surely, 2^136120521 is an apocalyptic number.

It is an amenable number.

136120521 is a deficient number, since it is larger than the sum of its proper divisors (50278903).

136120521 is a wasteful number, since it uses less digits than its factorization.

136120521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226351.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 136120521 is about 11667.0699406492. The cubic root of 136120521 is about 514.4081818242.

The spelling of 136120521 in words is "one hundred thirty-six million, one hundred twenty thousand, five hundred twenty-one".