120188257 has 4 divisors (see below), whose sum is σ = 137358016. Its totient is φ = 103018500.

The previous prime is 120188231. The next prime is 120188273. The reversal of 120188257 is 752881021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120188257 - 2¹⁵ = 120155489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120188207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8584869 + ... + 8584882.

It is an arithmetic number, because the mean of its divisors is an integer number (34339504).

Almost surely, 2^120188257 is an apocalyptic number.

It is an amenable number.

120188257 is a deficient number, since it is larger than the sum of its proper divisors (17169759).

120188257 is an equidigital number, since it uses as much as digits as its factorization.

120188257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17169758.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 120188257 is about 10963.0404997884. The cubic root of 120188257 is about 493.5002143707.

The spelling of 120188257 in words is "one hundred twenty million, one hundred eighty-eight thousand, two hundred fifty-seven".