423156 has 24 divisors (see below), whose sum is σ = 997920. Its totient is φ = 139552.

The previous prime is 423133. The next prime is 423173. The reversal of 423156 is 651324.

It is a happy number.

It is a super-2 number, since 2×423156² = 358122000672, which contains 22 as substring.

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 423156.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2050 + ... + 2246.

It is an arithmetic number, because the mean of its divisors is an integer number (41580).

2⁴²³¹⁵⁶ is an apocalyptic number.

It is an amenable number.

423156 is an abundant number, since it is smaller than the sum of its proper divisors (574764).

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

423156 is a wasteful number, since it uses less digits than its factorization.

423156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 381 counting only the distinct ones).

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

The square root of 423156 is about 650.5044196622. The cubic root of 423156 is about 75.0758344072.

The spelling of 423156 in words is "four hundred twenty-three thousand, one hundred fifty-six".