57942439 has 2 divisors, whose sum is σ = 57942440. Its totient is φ = 57942438.

The previous prime is 57942427. The next prime is 57942473. The reversal of 57942439 is 93424975.

57942439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57942439 - 2⁹ = 57941927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57942395 and 57942404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57942139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28971219 + 28971220.

It is an arithmetic number, because the mean of its divisors is an integer number (28971220).

Almost surely, 2^57942439 is an apocalyptic number.

57942439 is a deficient number, since it is larger than the sum of its proper divisors (1).

57942439 is an equidigital number, since it uses as much as digits as its factorization.

57942439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 57942439 is about 7611.9931029921. The cubic root of 57942439 is about 386.9595690747.

The spelling of 57942439 in words is "fifty-seven million, nine hundred forty-two thousand, four hundred thirty-nine".