120257715 has 16 divisors (see below), whose sum is σ = 197106336. Its totient is φ = 62572800.

The previous prime is 120257699. The next prime is 120257717. The reversal of 120257715 is 517752021.

It is not a de Polignac number, because 120257715 - 2⁴ = 120257699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120257717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97156 + ... + 98385.

It is an arithmetic number, because the mean of its divisors is an integer number (12319146).

Almost surely, 2^120257715 is an apocalyptic number.

120257715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120257715 is a deficient number, since it is larger than the sum of its proper divisors (76848621).

120257715 is a wasteful number, since it uses less digits than its factorization.

120257715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195590.

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 120257715 is about 10966.2078678092. The cubic root of 120257715 is about 493.5952623056.

The spelling of 120257715 in words is "one hundred twenty million, two hundred fifty-seven thousand, seven hundred fifteen".