120356521 has 4 divisors (see below), whose sum is σ = 120441600. Its totient is φ = 120271444.

The previous prime is 120356479. The next prime is 120356531. The reversal of 120356521 is 125653021.

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 120356521 - 2⁹ = 120356009 is a prime.

It is a super-3 number, since 3×120356521³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120356531) 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, 40381 + ... + 43258.

It is an arithmetic number, because the mean of its divisors is an integer number (30110400).

Almost surely, 2^120356521 is an apocalyptic number.

It is an amenable number.

120356521 is a deficient number, since it is larger than the sum of its proper divisors (85079).

120356521 is an equidigital number, since it uses as much as digits as its factorization.

120356521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85078.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 120356521 is about 10970.7119641343. The cubic root of 120356521 is about 493.7304076828.

The spelling of 120356521 in words is "one hundred twenty million, three hundred fifty-six thousand, five hundred twenty-one".