74121713 has 4 divisors (see below), whose sum is σ = 76512768. Its totient is φ = 71730660.

The previous prime is 74121703. The next prime is 74121721. The reversal of 74121713 is 31712147.

It is a happy number.

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 74121713 - 2¹⁰ = 74120689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74121703) 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, 1195481 + ... + 1195542.

It is an arithmetic number, because the mean of its divisors is an integer number (19128192).

Almost surely, 2^74121713 is an apocalyptic number.

It is an amenable number.

74121713 is a deficient number, since it is larger than the sum of its proper divisors (2391055).

74121713 is a wasteful number, since it uses less digits than its factorization.

74121713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391054.

The product of its digits is 1176, while the sum is 26.

The square root of 74121713 is about 8609.3967849089. The cubic root of 74121713 is about 420.0636959329.

The spelling of 74121713 in words is "seventy-four million, one hundred twenty-one thousand, seven hundred thirteen".