120285621 has 8 divisors (see below), whose sum is σ = 178200960. Its totient is φ = 80190396.

The previous prime is 120285521. The next prime is 120285623. The reversal of 120285621 is 126582021.

It is a happy number.

120285621 is a `hidden beast` number, since 12 + 0 + 28 + 5 + 621 = 666.

It is not a de Polignac number, because 120285621 - 2⁷ = 120285493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4455023 = 120285621 / (1 + 2 + 0 + 2 + 8 + 5 + 6 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120285623) 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, 2227485 + ... + 2227538.

It is an arithmetic number, because the mean of its divisors is an integer number (22275120).

Almost surely, 2^120285621 is an apocalyptic number.

It is an amenable number.

120285621 is a deficient number, since it is larger than the sum of its proper divisors (57915339).

120285621 is an equidigital number, since it uses as much as digits as its factorization.

120285621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4455032 (or 4455026 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 120285621 is about 10967.4801572649. The cubic root of 120285621 is about 493.6334392161.

The spelling of 120285621 in words is "one hundred twenty million, two hundred eighty-five thousand, six hundred twenty-one".