129071499 has 8 divisors (see below), whose sum is σ = 172847760. Its totient is φ = 85671456.

The previous prime is 129071491. The next prime is 129071513. The reversal of 129071499 is 994170921.

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

It is not a de Polignac number, because 129071499 - 2³ = 129071491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129071499.

It is not an unprimeable number, because it can be changed into a prime (129071491) 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, 93252 + ... + 94625.

It is an arithmetic number, because the mean of its divisors is an integer number (21605970).

Almost surely, 2^129071499 is an apocalyptic number.

129071499 is a deficient number, since it is larger than the sum of its proper divisors (43776261).

129071499 is a wasteful number, since it uses less digits than its factorization.

129071499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188109.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 129071499 is about 11360.9638235495. The cubic root of 129071499 is about 505.3707684647.

The spelling of 129071499 in words is "one hundred twenty-nine million, seventy-one thousand, four hundred ninety-nine".