42245044 has 6 divisors (see below), whose sum is σ = 73928834. Its totient is φ = 21122520.

The previous prime is 42245039. The next prime is 42245059. The reversal of 42245044 is 44054224.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 36144144 + 6100900 = 6012^2 + 2470^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280627 + ... + 5280634.

Almost surely, 2^42245044 is an apocalyptic number.

It is an amenable number.

42245044 is a deficient number, since it is larger than the sum of its proper divisors (31683790).

42245044 is a wasteful number, since it uses less digits than its factorization.

42245044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10561265 (or 10561263 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 42245044 is about 6499.6187580504. The cubic root of 42245044 is about 348.2773694779.

Adding to 42245044 its reverse (44054224), we get a palindrome (86299268).

The spelling of 42245044 in words is "forty-two million, two hundred forty-five thousand, forty-four".