129395532 has 24 divisors (see below), whose sum is σ = 345054976. Its totient is φ = 36970128.

The previous prime is 129395507. The next prime is 129395537. The reversal of 129395532 is 235593921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (129395537) 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, 770128 + ... + 770295.

Almost surely, 2^129395532 is an apocalyptic number.

129395532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129395532 is an abundant number, since it is smaller than the sum of its proper divisors (215659444).

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

129395532 is a wasteful number, since it uses less digits than its factorization.

129395532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540437 (or 1540435 counting only the distinct ones).

The product of its digits is 72900, while the sum is 39.

The square root of 129395532 is about 11375.2156902628. The cubic root of 129395532 is about 505.7933248554.

The spelling of 129395532 in words is "one hundred twenty-nine million, three hundred ninety-five thousand, five hundred thirty-two".