74121994 has 4 divisors (see below), whose sum is σ = 111182994. Its totient is φ = 37060996.

The previous prime is 74121977. The next prime is 74122001. The reversal of 74121994 is 49912147.

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

It can be written as a sum of positive squares in only one way, i.e., 45360225 + 28761769 = 6735^2 + 5363^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18530497 + ... + 18530500.

Almost surely, 2^74121994 is an apocalyptic number.

74121994 is a deficient number, since it is larger than the sum of its proper divisors (37061000).

74121994 is a wasteful number, since it uses less digits than its factorization.

74121994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37060999.

The product of its digits is 18144, while the sum is 37.

The square root of 74121994 is about 8609.4131042714. The cubic root of 74121994 is about 420.0642267614.

The spelling of 74121994 in words is "seventy-four million, one hundred twenty-one thousand, nine hundred ninety-four".