74490129 has 12 divisors (see below), whose sum is σ = 122967936. Its totient is φ = 42565752.

The previous prime is 74490121. The next prime is 74490187. The reversal of 74490129 is 92109447.

It is not a de Polignac number, because 74490129 - 2³ = 74490121 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 74490093 and 74490102.

It is not an unprimeable number, because it can be changed into a prime (74490121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 591129 + ... + 591254.

It is an arithmetic number, because the mean of its divisors is an integer number (10247328).

Almost surely, 2^74490129 is an apocalyptic number.

It is an amenable number.

74490129 is a deficient number, since it is larger than the sum of its proper divisors (48477807).

74490129 is a wasteful number, since it uses less digits than its factorization.

74490129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182396 (or 1182393 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 74490129 is about 8630.7664201970. The cubic root of 74490129 is about 420.7585102757.

The spelling of 74490129 in words is "seventy-four million, four hundred ninety thousand, one hundred twenty-nine".