129854427 has 8 divisors (see below), whose sum is σ = 173441616. Its totient is φ = 86418432.

The previous prime is 129854419. The next prime is 129854441. The reversal of 129854427 is 724458921.

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

It is not a de Polignac number, because 129854427 - 2³ = 129854419 is a prime.

It is a super-2 number, since 2×129854427² = 33724344422996658, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (129854477) 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, 35778 + ... + 39239.

It is an arithmetic number, because the mean of its divisors is an integer number (21680202).

Almost surely, 2^129854427 is an apocalyptic number.

129854427 is a deficient number, since it is larger than the sum of its proper divisors (43587189).

129854427 is an equidigital number, since it uses as much as digits as its factorization.

129854427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75597.

The product of its digits is 161280, while the sum is 42.

The square root of 129854427 is about 11395.3686645058. The cubic root of 129854427 is about 506.3905432686.

The spelling of 129854427 in words is "one hundred twenty-nine million, eight hundred fifty-four thousand, four hundred twenty-seven".