129000498 has 16 divisors (see below), whose sum is σ = 281455776. Its totient is φ = 39091040.

The previous prime is 129000493. The next prime is 129000499. The reversal of 129000498 is 894000921.

It is a super-2 number, since 2×129000498² = 33282256968496008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (129000493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977211 + ... + 977342.

It is an arithmetic number, because the mean of its divisors is an integer number (17590986).

Almost surely, 2^129000498 is an apocalyptic number.

129000498 is an abundant number, since it is smaller than the sum of its proper divisors (152455278).

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

129000498 is a wasteful number, since it uses less digits than its factorization.

129000498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954569.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 129000498 is about 11357.8386148070. The cubic root of 129000498 is about 505.2780849220.

The spelling of 129000498 in words is "one hundred twenty-nine million, four hundred ninety-eight", and thus it is an aban number.