56664142 has 4 divisors (see below), whose sum is σ = 84996216. Its totient is φ = 28332070.

The previous prime is 56664121. The next prime is 56664143. The reversal of 56664142 is 24146665.

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 = 56664098 and 56664107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56664143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14166034 + ... + 14166037.

It is an arithmetic number, because the mean of its divisors is an integer number (21249054).

Almost surely, 2^56664142 is an apocalyptic number.

56664142 is a deficient number, since it is larger than the sum of its proper divisors (28332074).

56664142 is a wasteful number, since it uses less digits than its factorization.

56664142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28332073.

The product of its digits is 34560, while the sum is 34.

The square root of 56664142 is about 7527.5588340444. The cubic root of 56664142 is about 384.0927465138.

The spelling of 56664142 in words is "fifty-six million, six hundred sixty-four thousand, one hundred forty-two".