140537 has 4 divisors (see below), whose sum is σ = 141300. Its totient is φ = 139776.

The previous prime is 140533. The next prime is 140549. The reversal of 140537 is 735041.

It is a happy number.

140537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 30976 + 109561 = 176^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 140537 - 2² = 140533 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (140533) 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, 89 + ... + 537.

It is an arithmetic number, because the mean of its divisors is an integer number (35325).

2¹⁴⁰⁵³⁷ is an apocalyptic number.

It is an amenable number.

140537 is a deficient number, since it is larger than the sum of its proper divisors (763).

140537 is an equidigital number, since it uses as much as digits as its factorization.

140537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 140537 is about 374.8826483048. The cubic root of 140537 is about 51.9912460609.

Adding to 140537 its reverse (735041), we get a palindrome (875578).

The spelling of 140537 in words is "one hundred forty thousand, five hundred thirty-seven".