129351157 has 4 divisors (see below), whose sum is σ = 139301260. Its totient is φ = 119401056.

The previous prime is 129351143. The next prime is 129351179. The reversal of 129351157 is 751153921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751153921 = 7 ⋅107307703.

It can be written as a sum of positive squares in 2 ways, for example, as 37075921 + 92275236 = 6089^2 + 9606^2 .

It is a cyclic number.

It is not a de Polignac number, because 129351157 - 2¹⁹ = 128826869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129351197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4975032 + ... + 4975057.

It is an arithmetic number, because the mean of its divisors is an integer number (34825315).

Almost surely, 2^129351157 is an apocalyptic number.

It is an amenable number.

129351157 is a deficient number, since it is larger than the sum of its proper divisors (9950103).

129351157 is an equidigital number, since it uses as much as digits as its factorization.

129351157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9950102.

The product of its digits is 9450, while the sum is 34.

The square root of 129351157 is about 11373.2650105412. The cubic root of 129351157 is about 505.7354991983.

The spelling of 129351157 in words is "one hundred twenty-nine million, three hundred fifty-one thousand, one hundred fifty-seven".