129941251 has 8 divisors (see below), whose sum is σ = 150092784. Its totient is φ = 111179520.

The previous prime is 129941249. The next prime is 129941263. The reversal of 129941251 is 152149921.

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 129941251 - 2¹ = 129941249 is a prime.

It is a super-2 number, since 2×129941251² = 33769457422890002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129941221) 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, 347250 + ... + 347623.

It is an arithmetic number, because the mean of its divisors is an integer number (18761598).

Almost surely, 2^129941251 is an apocalyptic number.

129941251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

129941251 is a deficient number, since it is larger than the sum of its proper divisors (20151533).

129941251 is a wasteful number, since it uses less digits than its factorization.

129941251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694901.

The product of its digits is 6480, while the sum is 34.

The square root of 129941251 is about 11399.1776457778. The cubic root of 129941251 is about 506.5033800250.

The spelling of 129941251 in words is "one hundred twenty-nine million, nine hundred forty-one thousand, two hundred fifty-one".