129497548 has 12 divisors (see below), whose sum is σ = 228627000. Its totient is φ = 64175552.

The previous prime is 129497531. The next prime is 129497611. The reversal of 129497548 is 845794921.

It is a super-2 number, since 2×129497548² = 33539229876024608, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 142798 + ... + 143701.

It is an arithmetic number, because the mean of its divisors is an integer number (19052250).

Almost surely, 2^129497548 is an apocalyptic number.

It is an amenable number.

129497548 is a deficient number, since it is larger than the sum of its proper divisors (99129452).

129497548 is a wasteful number, since it uses less digits than its factorization.

129497548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286616 (or 286614 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 129497548 is about 11379.6989415362. The cubic root of 129497548 is about 505.9262131571.

The spelling of 129497548 in words is "one hundred twenty-nine million, four hundred ninety-seven thousand, five hundred forty-eight".