129114432 has 56 divisors (see below), whose sum is σ = 379577600. Its totient is φ = 43037568.

The previous prime is 129114407. The next prime is 129114457. The reversal of 129114432 is 234411921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (129114407) and next prime (129114457).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 129114396 and 129114405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35632 + ... + 39087.

Almost surely, 2^129114432 is an apocalyptic number.

129114432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129114432 is an abundant number, since it is smaller than the sum of its proper divisors (250463168).

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

129114432 is an equidigital number, since it uses as much as digits as its factorization.

129114432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74740 (or 74724 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 129114432 is about 11362.8531628284. The cubic root of 129114432 is about 505.4267960104.

The spelling of 129114432 in words is "one hundred twenty-nine million, one hundred fourteen thousand, four hundred thirty-two".