129376854 has 24 divisors (see below), whose sum is σ = 283210200. Its totient is φ = 42680448.

The previous prime is 129376843. The next prime is 129376921. The reversal of 129376854 is 458673921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35304 + ... + 38795.

It is an arithmetic number, because the mean of its divisors is an integer number (11800425).

Almost surely, 2^129376854 is an apocalyptic number.

129376854 is an abundant number, since it is smaller than the sum of its proper divisors (153833346).

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

129376854 is a wasteful number, since it uses less digits than its factorization.

129376854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74204 (or 74201 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 129376854 is about 11374.3946652119. The cubic root of 129376854 is about 505.7689869148.

It can be divided in two parts, 12937 and 6854, that added together give a palindrome (19791).

The spelling of 129376854 in words is "one hundred twenty-nine million, three hundred seventy-six thousand, eight hundred fifty-four".