57660142 has 4 divisors (see below), whose sum is σ = 86490216. Its totient is φ = 28830070.

The previous prime is 57660137. The next prime is 57660143. The reversal of 57660142 is 24106675.

It is a happy number.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57660143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14415034 + ... + 14415037.

It is an arithmetic number, because the mean of its divisors is an integer number (21622554).

Almost surely, 2^57660142 is an apocalyptic number.

57660142 is a deficient number, since it is larger than the sum of its proper divisors (28830074).

57660142 is a wasteful number, since it uses less digits than its factorization.

57660142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28830073.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 57660142 is about 7593.4275528249. The cubic root of 57660142 is about 386.3301201955.

The spelling of 57660142 in words is "fifty-seven million, six hundred sixty thousand, one hundred forty-two".