57102742 has 8 divisors (see below), whose sum is σ = 86412456. Its totient is φ = 28298592.

The previous prime is 57102739. The next prime is 57102757. The reversal of 57102742 is 24720175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 57102742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126108 + ... + 126559.

It is an arithmetic number, because the mean of its divisors is an integer number (10801557).

Almost surely, 2^57102742 is an apocalyptic number.

57102742 is a deficient number, since it is larger than the sum of its proper divisors (29309714).

57102742 is a wasteful number, since it uses less digits than its factorization.

57102742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252782.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 57102742 is about 7556.6356270499. The cubic root of 57102742 is about 385.0812039878.

The spelling of 57102742 in words is "fifty-seven million, one hundred two thousand, seven hundred forty-two".