120257 has 4 divisors (see below), whose sum is σ = 122580. Its totient is φ = 117936.

The previous prime is 120247. The next prime is 120277. The reversal of 120257 is 752021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752021 = 199 ⋅3779.

It can be written as a sum of positive squares in 2 ways, for example, as 39601 + 80656 = 199^2 + 284^2 .

It is a cyclic number.

It is not a de Polignac number, because 120257 - 2⁶ = 120193 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 120257.

It is not an unprimeable number, because it can be changed into a prime (120247) 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, 1082 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (30645).

2¹²⁰²⁵⁷ is an apocalyptic number.

It is an amenable number.

120257 is a deficient number, since it is larger than the sum of its proper divisors (2323).

120257 is an equidigital number, since it uses as much as digits as its factorization.

120257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 120257 is about 346.7809106626. The cubic root of 120257 is about 49.3594284070.

Adding to 120257 its reverse (752021), we get a palindrome (872278).

The spelling of 120257 in words is "one hundred twenty thousand, two hundred fifty-seven".