74642156 has 6 divisors (see below), whose sum is σ = 130623780. Its totient is φ = 37321076.

The previous prime is 74642147. The next prime is 74642207. The reversal of 74642156 is 65124647.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9330266 + ... + 9330273.

It is an arithmetic number, because the mean of its divisors is an integer number (21770630).

Almost surely, 2^74642156 is an apocalyptic number.

It is an amenable number.

74642156 is a deficient number, since it is larger than the sum of its proper divisors (55981624).

74642156 is a wasteful number, since it uses less digits than its factorization.

74642156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18660543 (or 18660541 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 74642156 is about 8639.5692022230. The cubic root of 74642156 is about 421.0445579603.

The spelling of 74642156 in words is "seventy-four million, six hundred forty-two thousand, one hundred fifty-six".