129488475 has 12 divisors (see below), whose sum is σ = 214087736. Its totient is φ = 69060480.

The previous prime is 129488467. The next prime is 129488479. The reversal of 129488475 is 574884921.

It is a happy number.

It is not a de Polignac number, because 129488475 - 2³ = 129488467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129488479) 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 11 ways as a sum of consecutive naturals, for example, 863182 + ... + 863331.

Almost surely, 2^129488475 is an apocalyptic number.

129488475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129488475 is a deficient number, since it is larger than the sum of its proper divisors (84599261).

129488475 is a wasteful number, since it uses less digits than its factorization.

129488475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726526 (or 1726521 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 129488475 is about 11379.3002860457. The cubic root of 129488475 is about 505.9143972944.

The spelling of 129488475 in words is "one hundred twenty-nine million, four hundred eighty-eight thousand, four hundred seventy-five".