129154955 has 8 divisors (see below), whose sum is σ = 155049552. Its totient is φ = 103281568.

The previous prime is 129154943. The next prime is 129154979. The reversal of 129154955 is 559451921.

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

It is a cyclic number.

It is not a de Polignac number, because 129154955 - 2⁴ = 129154939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15584 + ... + 22386.

It is an arithmetic number, because the mean of its divisors is an integer number (19381194).

Almost surely, 2^129154955 is an apocalyptic number.

129154955 is a deficient number, since it is larger than the sum of its proper divisors (25894597).

129154955 is an equidigital number, since it uses as much as digits as its factorization.

129154955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10605.

The product of its digits is 81000, while the sum is 41.

The square root of 129154955 is about 11364.6361578363. The cubic root of 129154955 is about 505.4796671145.

The spelling of 129154955 in words is "one hundred twenty-nine million, one hundred fifty-four thousand, nine hundred fifty-five".