140724 has 24 divisors (see below), whose sum is σ = 365120. Its totient is φ = 46872.

The previous prime is 140717. The next prime is 140729. The reversal of 140724 is 427041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 140697 and 140706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544 + ... + 759.

2¹⁴⁰⁷²⁴ is an apocalyptic number.

It is an amenable number.

140724 is an abundant number, since it is smaller than the sum of its proper divisors (224396).

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

140724 is a wasteful number, since it uses less digits than its factorization.

140724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 140724 is about 375.1319767762. The cubic root of 140724 is about 52.0142958722.

Adding to 140724 its reverse (427041), we get a palindrome (567765).

It can be divided in two parts, 1407 and 24, that added together give a triangular number (1431 = T₅₃).

The spelling of 140724 in words is "one hundred forty thousand, seven hundred twenty-four", and thus it is an iban number.