68142056 has 16 divisors (see below), whose sum is σ = 134491200. Its totient is φ = 32277744.

The previous prime is 68142043. The next prime is 68142071. The reversal of 68142056 is 65024186.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 224000 + ... + 224303.

It is an arithmetic number, because the mean of its divisors is an integer number (8405700).

Almost surely, 2^68142056 is an apocalyptic number.

It is an amenable number.

68142056 is a deficient number, since it is larger than the sum of its proper divisors (66349144).

68142056 is a wasteful number, since it uses less digits than its factorization.

68142056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448328 (or 448324 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 68142056 is about 8254.8201676354. The cubic root of 68142056 is about 408.4495397521.

The spelling of 68142056 in words is "sixty-eight million, one hundred forty-two thousand, fifty-six".