120724 has 6 divisors (see below), whose sum is σ = 211274. Its totient is φ = 60360.

The previous prime is 120721. The next prime is 120737. The reversal of 120724 is 427021.

It can be written as a sum of positive squares in only one way, i.e., 101124 + 19600 = 318^2 + 140^2 .

It is a d-powerful number, because it can be written as 1 + 2 + 7⁶ + 0 + 2¹¹ + 4⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 120698 and 120707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15087 + ... + 15094.

2¹²⁰⁷²⁴ is an apocalyptic number.

It is an amenable number.

120724 is a deficient number, since it is larger than the sum of its proper divisors (90550).

120724 is a wasteful number, since it uses less digits than its factorization.

120724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30185 (or 30183 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 120724 is about 347.4535940237. The cubic root of 120724 is about 49.4232391875.

Adding to 120724 its reverse (427021), we get a palindrome (547745).

The spelling of 120724 in words is "one hundred twenty thousand, seven hundred twenty-four", and thus it is an iban number.