74406121 has 2 divisors, whose sum is σ = 74406122. Its totient is φ = 74406120.

The previous prime is 74406091. The next prime is 74406131. The reversal of 74406121 is 12160447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56250000 + 18156121 = 7500^2 + 4261^2 .

It is a cyclic number.

It is not a de Polignac number, because 74406121 - 2¹¹ = 74404073 is a prime.

It is not a weakly prime, because it can be changed into another prime (74406131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37203060 + 37203061.

It is an arithmetic number, because the mean of its divisors is an integer number (37203061).

Almost surely, 2^74406121 is an apocalyptic number.

It is an amenable number.

74406121 is a deficient number, since it is larger than the sum of its proper divisors (1).

74406121 is an equidigital number, since it uses as much as digits as its factorization.

74406121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 74406121 is about 8625.8982720642. The cubic root of 74406121 is about 420.6002773323.

Adding to 74406121 its reverse (12160447), we get a palindrome (86566568).

The spelling of 74406121 in words is "seventy-four million, four hundred six thousand, one hundred twenty-one".