120521 has 4 divisors (see below), whose sum is σ = 121344. Its totient is φ = 119700.

The previous prime is 120511. The next prime is 120539. The reversal of 120521 is 125021.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120521 is a prime.

It is a super-2 number, since 2×120521² = 29050622882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120511) 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, 125 + ... + 506.

It is an arithmetic number, because the mean of its divisors is an integer number (30336).

2¹²⁰⁵²¹ is an apocalyptic number.

It is an amenable number.

120521 is a deficient number, since it is larger than the sum of its proper divisors (823).

120521 is an equidigital number, since it uses as much as digits as its factorization.

120521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 120521 is about 347.1613457746. The cubic root of 120521 is about 49.3955215662.

Adding to 120521 its reverse (125021), we get a palindrome (245542).

The spelling of 120521 in words is "one hundred twenty thousand, five hundred twenty-one".