74920842 has 32 divisors (see below), whose sum is σ = 166872960. Its totient is φ = 24916320.

The previous prime is 74920841. The next prime is 74920847. The reversal of 74920842 is 24802947.

It is a super-2 number, since 2×74920842² = 11226265131977928, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 74920797 and 74920806.

It is not an unprimeable number, because it can be changed into a prime (74920841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26803 + ... + 29465.

It is an arithmetic number, because the mean of its divisors is an integer number (5214780).

Almost surely, 2^74920842 is an apocalyptic number.

74920842 is an abundant number, since it is smaller than the sum of its proper divisors (91952118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74920842 is a wasteful number, since it uses less digits than its factorization.

74920842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195 (or 3189 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 74920842 is about 8655.6826420566. The cubic root of 74920842 is about 421.5679149946.

The spelling of 74920842 in words is "seventy-four million, nine hundred twenty thousand, eight hundred forty-two".