140240452 has 36 divisors (see below), whose sum is σ = 273088368. Its totient is φ = 62959600.

The previous prime is 140240449. The next prime is 140240479. The reversal of 140240452 is 254042041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38427 + ... + 41917.

It is an arithmetic number, because the mean of its divisors is an integer number (7585788).

Almost surely, 2^140240452 is an apocalyptic number.

It is an amenable number.

140240452 is a deficient number, since it is larger than the sum of its proper divisors (132847916).

140240452 is a wasteful number, since it uses less digits than its factorization.

140240452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600 (or 3587 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 140240452 is about 11842.3161585899. The cubic root of 140240452 is about 519.5465129172.

Adding to 140240452 its reverse (254042041), we get a palindrome (394282493).

The spelling of 140240452 in words is "one hundred forty million, two hundred forty thousand, four hundred fifty-two".