120245817 has 32 divisors (see below), whose sum is σ = 172440576. Its totient is φ = 74360000.

The previous prime is 120245809. The next prime is 120245843. The reversal of 120245817 is 718542021.

It is a cyclic number.

It is not a de Polignac number, because 120245817 - 2³ = 120245809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120245887) 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, 478942 + ... + 479192.

It is an arithmetic number, because the mean of its divisors is an integer number (5388768).

Almost surely, 2^120245817 is an apocalyptic number.

It is an amenable number.

120245817 is a deficient number, since it is larger than the sum of its proper divisors (52194759).

120245817 is a wasteful number, since it uses less digits than its factorization.

120245817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 120245817 is about 10965.6653696892. The cubic root of 120245817 is about 493.5789834051.

Adding to 120245817 its reverse (718542021), we get a palindrome (838787838).

The spelling of 120245817 in words is "one hundred twenty million, two hundred forty-five thousand, eight hundred seventeen".