120412521 has 32 divisors (see below), whose sum is σ = 188835840. Its totient is φ = 75675600.

The previous prime is 120412489. The next prime is 120412559. The reversal of 120412521 is 125214021.

It is not a de Polignac number, because 120412521 - 2⁵ = 120412489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120412494 and 120412503.

It is not an unprimeable number, because it can be changed into a prime (120412561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42726 + ... + 45456.

It is an arithmetic number, because the mean of its divisors is an integer number (5901120).

Almost surely, 2^120412521 is an apocalyptic number.

It is an amenable number.

120412521 is a deficient number, since it is larger than the sum of its proper divisors (68423319).

120412521 is a wasteful number, since it uses less digits than its factorization.

120412521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834 (or 2828 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 120412521 is about 10973.2639173584. The cubic root of 120412521 is about 493.8069708123.

Adding to 120412521 its reverse (125214021), we get a palindrome (245626542).

The spelling of 120412521 in words is "one hundred twenty million, four hundred twelve thousand, five hundred twenty-one".