44140042 has 8 divisors (see below), whose sum is σ = 66446532. Its totient is φ = 21991200.

The previous prime is 44140039. The next prime is 44140049. The reversal of 44140042 is 24004144.

It can be written as a sum of positive squares in 2 ways, for example, as 40564161 + 3575881 = 6369^2 + 1891^2 .

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

It is not an unprimeable number, because it can be changed into a prime (44140049) 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, 38709 + ... + 39832.

Almost surely, 2^44140042 is an apocalyptic number.

44140042 is a deficient number, since it is larger than the sum of its proper divisors (22306490).

44140042 is a wasteful number, since it uses less digits than its factorization.

44140042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78824.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 44140042 is about 6643.7972575930. The cubic root of 44140042 is about 353.4089800851.

Adding to 44140042 its reverse (24004144), we get a palindrome (68144186).

The spelling of 44140042 in words is "forty-four million, one hundred forty thousand, forty-two".