156424 has 8 divisors (see below), whose sum is σ = 293310. Its totient is φ = 78208.

The previous prime is 156421. The next prime is 156437. The reversal of 156424 is 424651.

It can be written as a sum of positive squares in only one way, i.e., 108900 + 47524 = 330^2 + 218^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 156395 and 156404.

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 as a sum of consecutive naturals, namely, 9769 + ... + 9784.

2¹⁵⁶⁴²⁴ is an apocalyptic number.

It is an amenable number.

156424 is a deficient number, since it is larger than the sum of its proper divisors (136886).

156424 is a wasteful number, since it uses less digits than its factorization.

156424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19559 (or 19555 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 156424 is about 395.5047408060. The cubic root of 156424 is about 53.8808529878.

The spelling of 156424 in words is "one hundred fifty-six thousand, four hundred twenty-four".