129681874 has 8 divisors (see below), whose sum is σ = 222311808. Its totient is φ = 55577940.

The previous prime is 129681869. The next prime is 129681887. The reversal of 129681874 is 478186921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4631482 + ... + 4631509.

It is an arithmetic number, because the mean of its divisors is an integer number (27788976).

Almost surely, 2^129681874 is an apocalyptic number.

129681874 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129681874 is a deficient number, since it is larger than the sum of its proper divisors (92629934).

129681874 is an equidigital number, since it uses as much as digits as its factorization.

129681874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9263000.

The product of its digits is 193536, while the sum is 46.

The square root of 129681874 is about 11387.7949577607. The cubic root of 129681874 is about 506.1661434240.

The spelling of 129681874 in words is "one hundred twenty-nine million, six hundred eighty-one thousand, eight hundred seventy-four".