129104748 has 36 divisors (see below), whose sum is σ = 333941608. Its totient is φ = 42033600.

The previous prime is 129104747. The next prime is 129104761. The reversal of 129104748 is 847401921.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×129104748² = 33336071912287008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (129104741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40153 + ... + 43248.

Almost surely, 2^129104748 is an apocalyptic number.

129104748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

129104748 is an abundant number, since it is smaller than the sum of its proper divisors (204836860).

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

129104748 is a wasteful number, since it uses less digits than its factorization.

129104748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83454 (or 83449 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 129104748 is about 11362.4270294687. The cubic root of 129104748 is about 505.4141594797.

The spelling of 129104748 in words is "one hundred twenty-nine million, one hundred four thousand, seven hundred forty-eight".