129702380 has 12 divisors (see below), whose sum is σ = 272375040. Its totient is φ = 51880944.

The previous prime is 129702371. The next prime is 129702389. The reversal of 129702380 is 83207921.

It is an interprime number because it is at equal distance from previous prime (129702371) and next prime (129702389).

It is not an unprimeable number, because it can be changed into a prime (129702389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3242540 + ... + 3242579.

It is an arithmetic number, because the mean of its divisors is an integer number (22697920).

Almost surely, 2^129702380 is an apocalyptic number.

129702380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129702380 is an abundant number, since it is smaller than the sum of its proper divisors (142672660).

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

129702380 is a wasteful number, since it uses less digits than its factorization.

129702380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6485128 (or 6485126 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 129702380 is about 11388.6952720669. The cubic root of 129702380 is about 506.1928212615.

The spelling of 129702380 in words is "one hundred twenty-nine million, seven hundred two thousand, three hundred eighty".