129401437732 has 18 divisors (see below), whose sum is σ = 263424355782. Its totient is φ = 55457758944.

The previous prime is 129401437727. The next prime is 129401437751. The reversal of 129401437732 is 237734104921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 75787887616 + 53613550116 = 275296^2 + 231546^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 330105513 + ... + 330105904.

Almost surely, 2^129401437732 is an apocalyptic number.

It is an amenable number.

129401437732 is an abundant number, since it is smaller than the sum of its proper divisors (134022918050).

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

129401437732 is a wasteful number, since it uses less digits than its factorization.

129401437732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660211435 (or 660211426 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 129401437732 in words is "one hundred twenty-nine billion, four hundred one million, four hundred thirty-seven thousand, seven hundred thirty-two".