120623257 has 4 divisors (see below), whose sum is σ = 121391716. Its totient is φ = 119854800.

The previous prime is 120623221. The next prime is 120623273. The reversal of 120623257 is 752326021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752326021 = 23 ⋅32709827.

It can be written as a sum of positive squares in 2 ways, for example, as 65626201 + 54997056 = 8101^2 + 7416^2 .

It is a cyclic number.

It is not a de Polignac number, because 120623257 - 2¹¹ = 120621209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120623957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383994 + ... + 384307.

It is an arithmetic number, because the mean of its divisors is an integer number (30347929).

Almost surely, 2^120623257 is an apocalyptic number.

It is an amenable number.

120623257 is a deficient number, since it is larger than the sum of its proper divisors (768459).

120623257 is an equidigital number, since it uses as much as digits as its factorization.

120623257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768458.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 120623257 is about 10982.8619676294. The cubic root of 120623257 is about 494.0948762463.

Adding to 120623257 its reverse (752326021), we get a palindrome (872949278).

The spelling of 120623257 in words is "one hundred twenty million, six hundred twenty-three thousand, two hundred fifty-seven".