120424521 has 16 divisors (see below), whose sum is σ = 183680000. Its totient is φ = 68748048.

The previous prime is 120424483. The next prime is 120424531. The reversal of 120424521 is 125424021.

It is not a de Polignac number, because 120424521 - 2¹¹ = 120422473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (120424531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27330 + ... + 31428.

It is an arithmetic number, because the mean of its divisors is an integer number (11480000).

Almost surely, 2^120424521 is an apocalyptic number.

It is an amenable number.

120424521 is a deficient number, since it is larger than the sum of its proper divisors (63255479).

120424521 is a wasteful number, since it uses less digits than its factorization.

120424521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5508.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 120424521 is about 10973.8106872681. The cubic root of 120424521 is about 493.8233741087.

Adding to 120424521 its reverse (125424021), we get a palindrome (245848542).

The spelling of 120424521 in words is "one hundred twenty million, four hundred twenty-four thousand, five hundred twenty-one".