158434129 has 4 divisors (see below), whose sum is σ = 181067584. Its totient is φ = 135800676.

The previous prime is 158434109. The next prime is 158434139. The reversal of 158434129 is 921434851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158434129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158434109) 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, 11316717 + ... + 11316730.

It is an arithmetic number, because the mean of its divisors is an integer number (45266896).

Almost surely, 2^158434129 is an apocalyptic number.

It is an amenable number.

158434129 is a deficient number, since it is larger than the sum of its proper divisors (22633455).

158434129 is an equidigital number, since it uses as much as digits as its factorization.

158434129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22633454.

The product of its digits is 34560, while the sum is 37.

The square root of 158434129 is about 12587.0619685453. The cubic root of 158434129 is about 541.1067026560.

The spelling of 158434129 in words is "one hundred fifty-eight million, four hundred thirty-four thousand, one hundred twenty-nine".