140015244 has 12 divisors (see below), whose sum is σ = 326702264. Its totient is φ = 46671744.

The previous prime is 140015243. The next prime is 140015279. The reversal of 140015244 is 442510041.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 140015244.

It is not an unprimeable number, because it can be changed into a prime (140015243) 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, 5833957 + ... + 5833980.

Almost surely, 2^140015244 is an apocalyptic number.

It is an amenable number.

140015244 is an abundant number, since it is smaller than the sum of its proper divisors (186687020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140015244 is a wasteful number, since it uses less digits than its factorization.

140015244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11667944 (or 11667942 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 140015244 is about 11832.8037252377. The cubic root of 140015244 is about 519.2682557821.

Adding to 140015244 its reverse (442510041), we get a palindrome (582525285).

The spelling of 140015244 in words is "one hundred forty million, fifteen thousand, two hundred forty-four".