158040 has 48 divisors (see below), whose sum is σ = 514800. Its totient is φ = 42048.

The previous prime is 158029. The next prime is 158047. The reversal of 158040 is 40851.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158047) by changing a digit.

158040 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141 + ... + 579.

It is an arithmetic number, because the mean of its divisors is an integer number (10725).

2¹⁵⁸⁰⁴⁰ is an apocalyptic number.

158040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257400).

158040 is an abundant number, since it is smaller than the sum of its proper divisors (356760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158040 is a wasteful number, since it uses less digits than its factorization.

158040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 158040 is about 397.5424505635. The cubic root of 158040 is about 54.0657634993.

Adding to 158040 its reverse (40851), we get a palindrome (198891).

The spelling of 158040 in words is "one hundred fifty-eight thousand, forty".