129496854 has 64 divisors (see below), whose sum is σ = 288645120. Its totient is φ = 38656640.

The previous prime is 129496823. The next prime is 129496859. The reversal of 129496854 is 458694921.

Its product of digits (622080) is a multiple of the sum of its prime factors (270).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129496859) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 677899 + ... + 678089.

It is an arithmetic number, because the mean of its divisors is an integer number (4510080).

Almost surely, 2^129496854 is an apocalyptic number.

129496854 is an abundant number, since it is smaller than the sum of its proper divisors (159148266).

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

129496854 is a wasteful number, since it uses less digits than its factorization.

129496854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 236 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 129496854 is about 11379.6684485973. The cubic root of 129496854 is about 505.9253093731.

The spelling of 129496854 in words is "one hundred twenty-nine million, four hundred ninety-six thousand, eight hundred fifty-four".