74056121 has 2 divisors, whose sum is σ = 74056122. Its totient is φ = 74056120.

The previous prime is 74056069. The next prime is 74056123. The reversal of 74056121 is 12165047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73342096 + 714025 = 8564^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 74056121 - 2²⁶ = 6947257 is a prime.

Together with 74056123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74056123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37028060 + 37028061.

It is an arithmetic number, because the mean of its divisors is an integer number (37028061).

Almost surely, 2^74056121 is an apocalyptic number.

It is an amenable number.

74056121 is a deficient number, since it is larger than the sum of its proper divisors (1).

74056121 is an equidigital number, since it uses as much as digits as its factorization.

74056121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 74056121 is about 8605.5866156817. The cubic root of 74056121 is about 419.9397513729.

The spelling of 74056121 in words is "seventy-four million, fifty-six thousand, one hundred twenty-one".