57040123 has 4 divisors (see below), whose sum is σ = 65188720. Its totient is φ = 48891528.

The previous prime is 57040111. The next prime is 57040127. The reversal of 57040123 is 32104075.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 57040123 - 2⁵ = 57040091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57040094 and 57040103.

It is not an unprimeable number, because it can be changed into a prime (57040127) 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 3 ways as a sum of consecutive naturals, for example, 4074288 + ... + 4074301.

It is an arithmetic number, because the mean of its divisors is an integer number (16297180).

Almost surely, 2^57040123 is an apocalyptic number.

57040123 is a deficient number, since it is larger than the sum of its proper divisors (8148597).

57040123 is an equidigital number, since it uses as much as digits as its factorization.

57040123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8148596.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 57040123 is about 7552.4911784126. The cubic root of 57040123 is about 384.9403921884.

Adding to 57040123 its reverse (32104075), we get a palindrome (89144198).

The spelling of 57040123 in words is "fifty-seven million, forty thousand, one hundred twenty-three".