129418996 has 36 divisors (see below), whose sum is σ = 272556900. Its totient is φ = 53550336.

The previous prime is 129418987. The next prime is 129418997. The reversal of 129418996 is 699814921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26112100 + 103306896 = 5110^2 + 10164^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129418997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5701 + ... + 17068.

It is an arithmetic number, because the mean of its divisors is an integer number (7571025).

Almost surely, 2^129418996 is an apocalyptic number.

It is an amenable number.

129418996 is an abundant number, since it is smaller than the sum of its proper divisors (143137904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129418996 is a wasteful number, since it uses less digits than its factorization.

129418996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22816 (or 22807 counting only the distinct ones).

The product of its digits is 279936, while the sum is 49.

The square root of 129418996 is about 11376.2470085701. The cubic root of 129418996 is about 505.8238957649.

The spelling of 129418996 in words is "one hundred twenty-nine million, four hundred eighteen thousand, nine hundred ninety-six".