74274121 has 2 divisors, whose sum is σ = 74274122. Its totient is φ = 74274120.

The previous prime is 74274113. The next prime is 74274169. The reversal of 74274121 is 12147247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73616400 + 657721 = 8580^2 + 811^2 .

It is a cyclic number.

It is not a de Polignac number, because 74274121 - 2³ = 74274113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74274121.

It is not a weakly prime, because it can be changed into another prime (74274181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37137060 + 37137061.

It is an arithmetic number, because the mean of its divisors is an integer number (37137061).

Almost surely, 2^74274121 is an apocalyptic number.

It is an amenable number.

74274121 is a deficient number, since it is larger than the sum of its proper divisors (1).

74274121 is an equidigital number, since it uses as much as digits as its factorization.

74274121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3136, while the sum is 28.

The square root of 74274121 is about 8618.2434985326. The cubic root of 74274121 is about 420.3514084691.

The spelling of 74274121 in words is "seventy-four million, two hundred seventy-four thousand, one hundred twenty-one".