129145498 has 8 divisors (see below), whose sum is σ = 205113492. Its totient is φ = 60774336.

The previous prime is 129145493. The next prime is 129145501. The reversal of 129145498 is 894541921.

It can be written as a sum of positive squares in 2 ways, for example, as 127080529 + 2064969 = 11273^2 + 1437^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (129145493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1899165 + ... + 1899232.

Almost surely, 2^129145498 is an apocalyptic number.

129145498 is a deficient number, since it is larger than the sum of its proper divisors (75967994).

129145498 is a wasteful number, since it uses less digits than its factorization.

129145498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798416.

The product of its digits is 103680, while the sum is 43.

The square root of 129145498 is about 11364.2200788264. The cubic root of 129145498 is about 505.4673293819.

The spelling of 129145498 in words is "one hundred twenty-nine million, one hundred forty-five thousand, four hundred ninety-eight".