240137 has 4 divisors (see below), whose sum is σ = 246036. Its totient is φ = 234240.

The previous prime is 240131. The next prime is 240139. The reversal of 240137 is 731042.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118336 + 121801 = 344^2 + 349^2 .

It is a cyclic number.

It is not a de Polignac number, because 240137 - 2⁶ = 240073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240131) 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, 2888 + ... + 2969.

It is an arithmetic number, because the mean of its divisors is an integer number (61509).

2²⁴⁰¹³⁷ is an apocalyptic number.

It is an amenable number.

240137 is a deficient number, since it is larger than the sum of its proper divisors (5899).

240137 is an equidigital number, since it uses as much as digits as its factorization.

240137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5898.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 240137 is about 490.0377536476. The cubic root of 240137 is about 62.1564726157.

Adding to 240137 its reverse (731042), we get a palindrome (971179).

The spelling of 240137 in words is "two hundred forty thousand, one hundred thirty-seven".