129272463 has 8 divisors (see below), whose sum is σ = 191514800. Its totient is φ = 86181624.

The previous prime is 129272453. The next prime is 129272477. The reversal of 129272463 is 364272921.

129272463 is a `hidden beast` number, since 129 + 2 + 72 + 463 = 666.

It is not a de Polignac number, because 129272463 - 2⁶ = 129272399 is a prime.

It is a super-2 number, since 2×129272463² = 33422739380172738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129272453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2393908 + ... + 2393961.

It is an arithmetic number, because the mean of its divisors is an integer number (23939350).

Almost surely, 2^129272463 is an apocalyptic number.

129272463 is a deficient number, since it is larger than the sum of its proper divisors (62242337).

129272463 is an equidigital number, since it uses as much as digits as its factorization.

129272463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4787878 (or 4787872 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 129272463 is about 11369.8048795923. The cubic root of 129272463 is about 505.6329194616.

The spelling of 129272463 in words is "one hundred twenty-nine million, two hundred seventy-two thousand, four hundred sixty-three".