129904254 has 24 divisors (see below), whose sum is σ = 296273640. Its totient is φ = 41022288.

The previous prime is 129904249. The next prime is 129904261. The reversal of 129904254 is 452409921.

It is a super-3 number, since 3×129904254³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189577 + ... + 190260.

It is an arithmetic number, because the mean of its divisors is an integer number (12344735).

Almost surely, 2^129904254 is an apocalyptic number.

129904254 is an abundant number, since it is smaller than the sum of its proper divisors (166369386).

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

129904254 is a wasteful number, since it uses less digits than its factorization.

129904254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379864 (or 379861 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 129904254 is about 11397.5547377497. The cubic root of 129904254 is about 506.4553047495.

The spelling of 129904254 in words is "one hundred twenty-nine million, nine hundred four thousand, two hundred fifty-four".