120415257 has 6 divisors (see below), whose sum is σ = 173933162. Its totient is φ = 80276832.

The previous prime is 120415241. The next prime is 120415259. The reversal of 120415257 is 752514021.

It can be written as a sum of positive squares in only one way, i.e., 117418896 + 2996361 = 10836^2 + 1731^2 .

It is not a de Polignac number, because 120415257 - 2⁴ = 120415241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120415257.

It is not an unprimeable number, because it can be changed into a prime (120415259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6689728 + ... + 6689745.

Almost surely, 2^120415257 is an apocalyptic number.

It is an amenable number.

120415257 is a deficient number, since it is larger than the sum of its proper divisors (53517905).

120415257 is a wasteful number, since it uses less digits than its factorization.

120415257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13379479 (or 13379476 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 120415257 is about 10973.3885832955. The cubic root of 120415257 is about 493.8107108598.

Adding to 120415257 its reverse (752514021), we get a palindrome (872929278).

It can be divided in two parts, 1204 and 15257, that added together give a palindrome (16461).

The spelling of 120415257 in words is "one hundred twenty million, four hundred fifteen thousand, two hundred fifty-seven".