120061621 has 4 divisors (see below), whose sum is σ = 120560044. Its totient is φ = 119563200.

The previous prime is 120061561. The next prime is 120061649. The reversal of 120061621 is 126160021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 108972721 + 11088900 = 10439^2 + 3330^2 .

It is a cyclic number.

It is not a de Polignac number, because 120061621 - 2²⁵ = 86507189 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 (120061651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248850 + ... + 249331.

It is an arithmetic number, because the mean of its divisors is an integer number (30140011).

Almost surely, 2^120061621 is an apocalyptic number.

It is an amenable number.

120061621 is a deficient number, since it is larger than the sum of its proper divisors (498423).

120061621 is an equidigital number, since it uses as much as digits as its factorization.

120061621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498422.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 120061621 is about 10957.2633900988. The cubic root of 120061621 is about 493.3268284488.

The spelling of 120061621 in words is "one hundred twenty million, sixty-one thousand, six hundred twenty-one".