156423 has 8 divisors (see below), whose sum is σ = 217728. Its totient is φ = 99704.

The previous prime is 156421. The next prime is 156437. The reversal of 156423 is 324651.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156423 - 2¹ = 156421 is a prime.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 156423.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 156423.

It is not an unprimeable number, because it can be changed into a prime (156421) 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, 1065 + ... + 1202.

It is an arithmetic number, because the mean of its divisors is an integer number (27216).

2¹⁵⁶⁴²³ is an apocalyptic number.

156423 is a deficient number, since it is larger than the sum of its proper divisors (61305).

156423 is a wasteful number, since it uses less digits than its factorization.

156423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293.

The product of its digits is 720, while the sum is 21.

The square root of 156423 is about 395.5034765966. The cubic root of 156423 is about 53.8807381696.

The spelling of 156423 in words is "one hundred fifty-six thousand, four hundred twenty-three".