129323475 has 36 divisors (see below), whose sum is σ = 239117632. Its totient is φ = 66744000.

The previous prime is 129323431. The next prime is 129323543. The reversal of 129323475 is 574323921.

It is not a de Polignac number, because 129323475 - 2⁷ = 129323347 is a prime.

It is a super-2 number, since 2×129323475² = 33449122372151250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2296 + ... + 16245.

Almost surely, 2^129323475 is an apocalyptic number.

129323475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129323475 is a deficient number, since it is larger than the sum of its proper divisors (109794157).

129323475 is a wasteful number, since it uses less digits than its factorization.

129323475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18588 (or 18580 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 129323475 is about 11372.0479685939. The cubic root of 129323475 is about 505.6994197146.

The spelling of 129323475 in words is "one hundred twenty-nine million, three hundred twenty-three thousand, four hundred seventy-five".