156923 has 4 divisors (see below), whose sum is σ = 169008. Its totient is φ = 144840.

The previous prime is 156913. The next prime is 156941. The reversal of 156923 is 329651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 329651 = 7 ⋅47093.

It is a cyclic number.

It is not a de Polignac number, because 156923 - 2¹⁶ = 91387 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 156892 and 156901.

It is not an unprimeable number, because it can be changed into a prime (156913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6023 + ... + 6048.

It is an arithmetic number, because the mean of its divisors is an integer number (42252).

2¹⁵⁶⁹²³ is an apocalyptic number.

156923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

156923 is a deficient number, since it is larger than the sum of its proper divisors (12085).

156923 is a wasteful number, since it uses less digits than its factorization.

156923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12084.

The product of its digits is 1620, while the sum is 26.

The square root of 156923 is about 396.1350779721. The cubic root of 156923 is about 53.9380863331.

The spelling of 156923 in words is "one hundred fifty-six thousand, nine hundred twenty-three".