156040 has 32 divisors (see below), whose sum is σ = 362880. Its totient is φ = 60352.

The previous prime is 156019. The next prime is 156041. The reversal of 156040 is 40651.

156040 = 33² + 34² + ... + 79².

It is not an unprimeable number, because it can be changed into a prime (156041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1839 + ... + 1921.

It is an arithmetic number, because the mean of its divisors is an integer number (11340).

2¹⁵⁶⁰⁴⁰ is an apocalyptic number.

156040 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 156040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181440).

156040 is an abundant number, since it is smaller than the sum of its proper divisors (206840).

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

156040 is a wasteful number, since it uses less digits than its factorization.

156040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 156040 is about 395.0189868854. The cubic root of 156040 is about 53.8367267641.

Adding to 156040 its reverse (40651), we get a palindrome (196691).

It can be divided in two parts, 1560 and 40, that added together give a square (1600 = 40²).

The spelling of 156040 in words is "one hundred fifty-six thousand, forty".