158507129 has 4 divisors (see below), whose sum is σ = 172916880. Its totient is φ = 144097380.

The previous prime is 158507113. The next prime is 158507137. The reversal of 158507129 is 921705851.

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, and also an emirpimes, since its reverse is a distinct semiprime: 921705851 = 11 ⋅83791441.

It is a cyclic number.

It is not a de Polignac number, because 158507129 - 2⁴ = 158507113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158507092 and 158507101.

It is not an unprimeable number, because it can be changed into a prime (158507029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7204859 + ... + 7204880.

It is an arithmetic number, because the mean of its divisors is an integer number (43229220).

Almost surely, 2^158507129 is an apocalyptic number.

It is an amenable number.

158507129 is a deficient number, since it is larger than the sum of its proper divisors (14409751).

158507129 is a wasteful number, since it uses less digits than its factorization.

158507129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14409750.

The product of its (nonzero) digits is 25200, while the sum is 38.

The square root of 158507129 is about 12589.9614375899. The cubic root of 158507129 is about 541.1897965456.

The spelling of 158507129 in words is "one hundred fifty-eight million, five hundred seven thousand, one hundred twenty-nine".