74792121 has 4 divisors (see below), whose sum is σ = 99722832. Its totient is φ = 49861412.

The previous prime is 74792099. The next prime is 74792149. The reversal of 74792121 is 12129747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74792121 - 2¹⁷ = 74661049 is a prime.

It is a super-2 number, since 2×74792121² = 11187722727357282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74792191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12465351 + ... + 12465356.

It is an arithmetic number, because the mean of its divisors is an integer number (24930708).

Almost surely, 2^74792121 is an apocalyptic number.

It is an amenable number.

74792121 is a deficient number, since it is larger than the sum of its proper divisors (24930711).

74792121 is a wasteful number, since it uses less digits than its factorization.

74792121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24930710.

The product of its digits is 7056, while the sum is 33.

The square root of 74792121 is about 8648.2438101617. The cubic root of 74792121 is about 421.3263455858.

The spelling of 74792121 in words is "seventy-four million, seven hundred ninety-two thousand, one hundred twenty-one".