44040042 has 12 divisors (see below), whose sum is σ = 95420130. Its totient is φ = 14680008.

The previous prime is 44040001. The next prime is 44040077. The reversal of 44040042 is 24004044.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 29909961 + 14130081 = 5469^2 + 3759^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2446669 = 44040042 / (4 + 4 + 0 + 4 + 0 + 0 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 44039997 and 44040024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1223317 + ... + 1223352.

Almost surely, 2^44040042 is an apocalyptic number.

44040042 is an abundant number, since it is smaller than the sum of its proper divisors (51380088).

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

44040042 is a wasteful number, since it uses less digits than its factorization.

44040042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446677 (or 2446674 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 44040042 is about 6636.2671736451. The cubic root of 44040042 is about 353.1418936445.

Adding to 44040042 its reverse (24004044), we get a palindrome (68044086).

The spelling of 44040042 in words is "forty-four million, forty thousand, forty-two", and thus it is an eban number.