159724 has 12 divisors (see below), whose sum is σ = 283864. Its totient is φ = 78624.

The previous prime is 159721. The next prime is 159737. The reversal of 159724 is 427951.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 159692 and 159701.

It is not an unprimeable number, because it can be changed into a prime (159721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19 + ... + 565.

2¹⁵⁹⁷²⁴ is an apocalyptic number.

It is an amenable number.

159724 is a deficient number, since it is larger than the sum of its proper divisors (124140).

159724 is a wasteful number, since it uses less digits than its factorization.

159724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 622 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 159724 is about 399.6548510903. The cubic root of 159724 is about 54.2571185630.

The spelling of 159724 in words is "one hundred fifty-nine thousand, seven hundred twenty-four".