129613420 has 24 divisors (see below), whose sum is σ = 272412000. Its totient is φ = 51802752.

The previous prime is 129613403. The next prime is 129613427. The reversal of 129613420 is 24316921.

It is not an unprimeable number, because it can be changed into a prime (129613427) 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, 35856 + ... + 39304.

It is an arithmetic number, because the mean of its divisors is an integer number (11350500).

Almost surely, 2^129613420 is an apocalyptic number.

129613420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129613420 is an abundant number, since it is smaller than the sum of its proper divisors (142798580).

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

129613420 is a wasteful number, since it uses less digits than its factorization.

129613420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5337 (or 5335 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 129613420 is about 11384.7889747680. The cubic root of 129613420 is about 506.0770659645.

The spelling of 129613420 in words is "one hundred twenty-nine million, six hundred thirteen thousand, four hundred twenty".