129454091 has 8 divisors (see below), whose sum is σ = 139555584. Its totient is φ = 119373120.

The previous prime is 129454063. The next prime is 129454141. The reversal of 129454091 is 190454921.

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 129454091 - 2¹⁰ = 129453067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129454001) 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, 9551 + ... + 18711.

It is an arithmetic number, because the mean of its divisors is an integer number (17444448).

Almost surely, 2^129454091 is an apocalyptic number.

129454091 is a deficient number, since it is larger than the sum of its proper divisors (10101493).

129454091 is a wasteful number, since it uses less digits than its factorization.

129454091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10261.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 129454091 is about 11377.7893722814. The cubic root of 129454091 is about 505.8696136420.

The spelling of 129454091 in words is "one hundred twenty-nine million, four hundred fifty-four thousand, ninety-one".