74717121 has 8 divisors (see below), whose sum is σ = 101502720. Its totient is φ = 48871472.

The previous prime is 74717117. The next prime is 74717141. The reversal of 74717121 is 12171747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74717121 - 2² = 74717117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74717141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234801 + ... + 235118.

It is an arithmetic number, because the mean of its divisors is an integer number (12687840).

Almost surely, 2^74717121 is an apocalyptic number.

It is an amenable number.

74717121 is a deficient number, since it is larger than the sum of its proper divisors (26785599).

74717121 is a wasteful number, since it uses less digits than its factorization.

74717121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469975.

The product of its digits is 2744, while the sum is 30.

The square root of 74717121 is about 8643.9065820959. The cubic root of 74717121 is about 421.1854660216.

Adding to 74717121 its reverse (12171747), we get a palindrome (86888868).

The spelling of 74717121 in words is "seventy-four million, seven hundred seventeen thousand, one hundred twenty-one".