57478142 has 4 divisors (see below), whose sum is σ = 86217216. Its totient is φ = 28739070.

The previous prime is 57478117. The next prime is 57478147. The reversal of 57478142 is 24187475.

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

It is a junction number, because it is equal to n+sod(n) for n = 57478096 and 57478105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57478147) 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 as a sum of consecutive naturals, namely, 14369534 + ... + 14369537.

It is an arithmetic number, because the mean of its divisors is an integer number (21554304).

Almost surely, 2^57478142 is an apocalyptic number.

57478142 is a deficient number, since it is larger than the sum of its proper divisors (28739074).

57478142 is a wasteful number, since it uses less digits than its factorization.

57478142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28739073.

The product of its digits is 62720, while the sum is 38.

The square root of 57478142 is about 7581.4340332156. The cubic root of 57478142 is about 385.9232175661.

The spelling of 57478142 in words is "fifty-seven million, four hundred seventy-eight thousand, one hundred forty-two".