129884023 has 8 divisors (see below), whose sum is σ = 136649520. Its totient is φ = 123289920.

The previous prime is 129883993. The next prime is 129884087. The reversal of 129884023 is 320488921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129884023 - 2⁹ = 129883511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129888023) 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, 41293 + ... + 44326.

It is an arithmetic number, because the mean of its divisors is an integer number (17081190).

Almost surely, 2^129884023 is an apocalyptic number.

129884023 is a deficient number, since it is larger than the sum of its proper divisors (6765497).

129884023 is an equidigital number, since it uses as much as digits as its factorization.

129884023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85697.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 129884023 is about 11396.6671882617. The cubic root of 129884023 is about 506.4290119764.

The spelling of 129884023 in words is "one hundred twenty-nine million, eight hundred eighty-four thousand, twenty-three".