129472576 has 14 divisors (see below), whose sum is σ = 256922270. Its totient is φ = 64736256.

The previous prime is 129472573. The next prime is 129472579. The reversal of 129472576 is 675274921.

It is an interprime number because it is at equal distance from previous prime (129472573) and next prime (129472579).

It can be written as a sum of positive squares in only one way, i.e., 120472576 + 9000000 = 10976^2 + 3000^2 .

It is not an unprimeable number, because it can be changed into a prime (129472571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011441 + ... + 1011568.

Almost surely, 2^129472576 is an apocalyptic number.

129472576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129472576 is a deficient number, since it is larger than the sum of its proper divisors (127449694).

129472576 is an equidigital number, since it uses as much as digits as its factorization.

129472576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023021 (or 2023011 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 129472576 is about 11378.6016715588. The cubic root of 129472576 is about 505.8936905295.

The spelling of 129472576 in words is "one hundred twenty-nine million, four hundred seventy-two thousand, five hundred seventy-six".