120521145 has 16 divisors (see below), whose sum is σ = 193059072. Its totient is φ = 64202880.

The previous prime is 120521111. The next prime is 120521153. The reversal of 120521145 is 541125021.

It is not a de Polignac number, because 120521145 - 2⁸ = 120520889 is a prime.

It is a super-2 number, since 2×120521145² = 29050692784222050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10080 + ... + 18510.

It is an arithmetic number, because the mean of its divisors is an integer number (12066192).

Almost surely, 2^120521145 is an apocalyptic number.

120521145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120521145 is a deficient number, since it is larger than the sum of its proper divisors (72537927).

120521145 is an equidigital number, since it uses as much as digits as its factorization.

120521145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9392.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 120521145 is about 10978.2122861603. The cubic root of 120521145 is about 493.9554137559.

Adding to 120521145 its reverse (541125021), we get a palindrome (661646166).

The spelling of 120521145 in words is "one hundred twenty million, five hundred twenty-one thousand, one hundred forty-five".