140005244 has 12 divisors (see below), whose sum is σ = 246036000. Its totient is φ = 69709248.

The previous prime is 140005231. The next prime is 140005247. The reversal of 140005244 is 442500041.

140005244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140005247) 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, 72269 + ... + 74180.

It is an arithmetic number, because the mean of its divisors is an integer number (20503000).

Almost surely, 2^140005244 is an apocalyptic number.

It is an amenable number.

140005244 is a deficient number, since it is larger than the sum of its proper divisors (106030756).

140005244 is a wasteful number, since it uses less digits than its factorization.

140005244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146692 (or 146690 counting only the distinct ones).

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

The square root of 140005244 is about 11832.3811635697. The cubic root of 140005244 is about 519.2558933039.

Adding to 140005244 its reverse (442500041), we get a palindrome (582505285).

The spelling of 140005244 in words is "one hundred forty million, five thousand, two hundred forty-four".