140021044 has 12 divisors (see below), whose sum is σ = 259450884. Its totient is φ = 65892224.

The previous prime is 140021023. The next prime is 140021107. The reversal of 140021044 is 440120041.

140021044 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 76212900 + 63808144 = 8730^2 + 7988^2 .

It is a congruent number.

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, 1029499 + ... + 1029634.

It is an arithmetic number, because the mean of its divisors is an integer number (21620907).

Almost surely, 2^140021044 is an apocalyptic number.

It is an amenable number.

140021044 is a deficient number, since it is larger than the sum of its proper divisors (119429840).

140021044 is a wasteful number, since it uses less digits than its factorization.

140021044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059154 (or 2059152 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 140021044 is about 11833.0488040910. The cubic root of 140021044 is about 519.2754257497.

Adding to 140021044 its reverse (440120041), we get a palindrome (580141085).

The spelling of 140021044 in words is "one hundred forty million, twenty-one thousand, forty-four".