129249548 has 12 divisors (see below), whose sum is σ = 231703752. Its totient is φ = 63048480.

The previous prime is 129249539. The next prime is 129249553. The reversal of 129249548 is 845942921.

It is a junction number, because it is equal to n+sod(n) for n = 129249499 and 129249508.

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, 393890 + ... + 394217.

It is an arithmetic number, because the mean of its divisors is an integer number (19308646).

Almost surely, 2^129249548 is an apocalyptic number.

It is an amenable number.

129249548 is a deficient number, since it is larger than the sum of its proper divisors (102454204).

129249548 is a wasteful number, since it uses less digits than its factorization.

129249548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788152 (or 788150 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 129249548 is about 11368.7971219474. The cubic root of 129249548 is about 505.6030413196.

The spelling of 129249548 in words is "one hundred twenty-nine million, two hundred forty-nine thousand, five hundred forty-eight".