140240252 has 12 divisors (see below), whose sum is σ = 245737800. Its totient is φ = 70029456.

The previous prime is 140240161. The next prime is 140240267. The reversal of 140240252 is 252042041.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19127 + ... + 25422.

It is an arithmetic number, because the mean of its divisors is an integer number (20478150).

Almost surely, 2^140240252 is an apocalyptic number.

It is an amenable number.

140240252 is a deficient number, since it is larger than the sum of its proper divisors (105497548).

140240252 is a wasteful number, since it uses less digits than its factorization.

140240252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45340 (or 45338 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 140240252 is about 11842.3077142929. The cubic root of 140240252 is about 519.5462659382.

Adding to 140240252 its reverse (252042041), we get a palindrome (392282293).

The spelling of 140240252 in words is "one hundred forty million, two hundred forty thousand, two hundred fifty-two".