74277121 has 4 divisors (see below), whose sum is σ = 74297412. Its totient is φ = 74256832.

The previous prime is 74277113. The next prime is 74277139. The reversal of 74277121 is 12177247.

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

It can be written as a sum of positive squares in 2 ways, for example, as 68707521 + 5569600 = 8289^2 + 2360^2 .

It is a cyclic number.

It is not a de Polignac number, because 74277121 - 2³ = 74277113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74277101) 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, 2956 + ... + 12541.

It is an arithmetic number, because the mean of its divisors is an integer number (18574353).

Almost surely, 2^74277121 is an apocalyptic number.

It is an amenable number.

74277121 is a deficient number, since it is larger than the sum of its proper divisors (20291).

74277121 is a wasteful number, since it uses less digits than its factorization.

74277121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20290.

The product of its digits is 5488, while the sum is 31.

The square root of 74277121 is about 8618.4175461624. The cubic root of 74277121 is about 420.3570678528.

The spelling of 74277121 in words is "seventy-four million, two hundred seventy-seven thousand, one hundred twenty-one".