120445521 has 16 divisors (see below), whose sum is σ = 187000704. Its totient is φ = 67526784.

The previous prime is 120445517. The next prime is 120445529. The reversal of 120445521 is 125544021.

It is not a de Polignac number, because 120445521 - 2² = 120445517 is a prime.

It is a super-2 number, since 2×120445521² = 29014247057922882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120445491 and 120445500.

It is not an unprimeable number, because it can be changed into a prime (120445529) 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, 52996 + ... + 55221.

It is an arithmetic number, because the mean of its divisors is an integer number (11687544).

Almost surely, 2^120445521 is an apocalyptic number.

It is an amenable number.

120445521 is a deficient number, since it is larger than the sum of its proper divisors (66555183).

120445521 is a wasteful number, since it uses less digits than its factorization.

120445521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108280.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 120445521 is about 10974.7674690628. The cubic root of 120445521 is about 493.8520772555.

Adding to 120445521 its reverse (125544021), we get a palindrome (245989542).

The spelling of 120445521 in words is "one hundred twenty million, four hundred forty-five thousand, five hundred twenty-one".