129997332 has 48 divisors (see below), whose sum is σ = 337841280. Its totient is φ = 43228224.

The previous prime is 129997331. The next prime is 129997333. The reversal of 129997332 is 233799921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (129997331) and next prime (129997333).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129997331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53128 + ... + 55520.

It is an arithmetic number, because the mean of its divisors is an integer number (7038360).

Almost surely, 2^129997332 is an apocalyptic number.

129997332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129997332 is an abundant number, since it is smaller than the sum of its proper divisors (207843948).

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

129997332 is a wasteful number, since it uses less digits than its factorization.

129997332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909 (or 2901 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 129997332 is about 11401.6372508513. The cubic root of 129997332 is about 506.5762363617.

The spelling of 129997332 in words is "one hundred twenty-nine million, nine hundred ninety-seven thousand, three hundred thirty-two".