74494129 has 2 divisors, whose sum is σ = 74494130. Its totient is φ = 74494128.

The previous prime is 74494109. The next prime is 74494139. The reversal of 74494129 is 92149447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68442529 + 6051600 = 8273^2 + 2460^2 .

It is a cyclic number.

It is not a de Polignac number, because 74494129 - 2⁷ = 74494001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74494091 and 74494100.

It is not a weakly prime, because it can be changed into another prime (74494109) 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, 37247064 + 37247065.

It is an arithmetic number, because the mean of its divisors is an integer number (37247065).

Almost surely, 2^74494129 is an apocalyptic number.

It is an amenable number.

74494129 is a deficient number, since it is larger than the sum of its proper divisors (1).

74494129 is an equidigital number, since it uses as much as digits as its factorization.

74494129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 74494129 is about 8630.9981462169. The cubic root of 74494129 is about 420.7660414925.

The spelling of 74494129 in words is "seventy-four million, four hundred ninety-four thousand, one hundred twenty-nine".