156123 has 24 divisors (see below), whose sum is σ = 262080. Its totient is φ = 88560.

The previous prime is 156119. The next prime is 156127. The reversal of 156123 is 321651.

It is an interprime number because it is at equal distance from previous prime (156119) and next prime (156127).

It is not a de Polignac number, because 156123 - 2² = 156119 is a prime.

It is a super-2 number, since 2×156123² = 48748782258, which contains 22 as substring.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 156096 and 156105.

It is not an unprimeable number, because it can be changed into a prime (156127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1840 + ... + 1922.

It is an arithmetic number, because the mean of its divisors is an integer number (10920).

2¹⁵⁶¹²³ is an apocalyptic number.

156123 is a deficient number, since it is larger than the sum of its proper divisors (105957).

156123 is a wasteful number, since it uses less digits than its factorization.

156123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 116 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 156123 is about 395.1240311598. The cubic root of 156123 is about 53.8462705911.

Adding to 156123 its reverse (321651), we get a palindrome (477774).

The spelling of 156123 in words is "one hundred fifty-six thousand, one hundred twenty-three".