140031242 has 8 divisors (see below), whose sum is σ = 226204356. Its totient is φ = 64629792.

The previous prime is 140031239. The next prime is 140031257. The reversal of 140031242 is 242130041.

It can be written as a sum of positive squares in 2 ways, for example, as 129527161 + 10504081 = 11381^2 + 3241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 140031242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2692883 + ... + 2692934.

Almost surely, 2^140031242 is an apocalyptic number.

140031242 is a deficient number, since it is larger than the sum of its proper divisors (86173114).

140031242 is a wasteful number, since it uses less digits than its factorization.

140031242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5385832.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 140031242 is about 11833.4797080149. The cubic root of 140031242 is about 519.2880320506.

Adding to 140031242 its reverse (242130041), we get a palindrome (382161283).

The spelling of 140031242 in words is "one hundred forty million, thirty-one thousand, two hundred forty-two".