74811121 has 16 divisors (see below), whose sum is σ = 93477888. Its totient is φ = 58165200.

The previous prime is 74811119. The next prime is 74811131. The reversal of 74811121 is 12111847.

It is a cyclic number.

It is not a de Polignac number, because 74811121 - 2¹ = 74811119 is a prime.

It is a super-4 number, since 4×74811121⁴ (a number of 33 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (74811131) 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, 48756 + ... + 50266.

It is an arithmetic number, because the mean of its divisors is an integer number (5842368).

Almost surely, 2^74811121 is an apocalyptic number.

It is an amenable number.

74811121 is a deficient number, since it is larger than the sum of its proper divisors (18666767).

74811121 is a wasteful number, since it uses less digits than its factorization.

74811121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172.

The product of its digits is 448, while the sum is 25.

The square root of 74811121 is about 8649.3422293259. The cubic root of 74811121 is about 421.3620201225.

Adding to 74811121 its reverse (12111847), we get a palindrome (86922968).

The spelling of 74811121 in words is "seventy-four million, eight hundred eleven thousand, one hundred twenty-one".