158423013 has 32 divisors (see below), whose sum is σ = 271488000. Its totient is φ = 89427888.

The previous prime is 158423003. The next prime is 158423021. The reversal of 158423013 is 310324851.

It is a happy number.

It is not a de Polignac number, because 158423013 - 2⁵ = 158422981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158423003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10638 + ... + 20736.

It is an arithmetic number, because the mean of its divisors is an integer number (8484000).

Almost surely, 2^158423013 is an apocalyptic number.

It is an amenable number.

158423013 is a deficient number, since it is larger than the sum of its proper divisors (113064987).

158423013 is a wasteful number, since it uses less digits than its factorization.

158423013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10198 (or 10192 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 158423013 is about 12586.6203962779. The cubic root of 158423013 is about 541.0940473802.

Adding to 158423013 its reverse (310324851), we get a palindrome (468747864).

The spelling of 158423013 in words is "one hundred fifty-eight million, four hundred twenty-three thousand, thirteen".