129492480 has 160 divisors (see below), whose sum is σ = 446158944. Its totient is φ = 31850496.

The previous prime is 129492457. The next prime is 129492509. The reversal of 129492480 is 84294921.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99192 + ... + 100488.

Almost surely, 2^129492480 is an apocalyptic number.

129492480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129492480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223079472).

129492480 is an abundant number, since it is smaller than the sum of its proper divisors (316666464).

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

129492480 is a wasteful number, since it uses less digits than its factorization.

129492480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336 (or 1320 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 129492480 is about 11379.4762621133. The cubic root of 129492480 is about 505.9196131158.

The spelling of 129492480 in words is "one hundred twenty-nine million, four hundred ninety-two thousand, four hundred eighty".