42444544 has 18 divisors (see below), whose sum is σ = 84723800. Its totient is φ = 21222144.

The previous prime is 42444539. The next prime is 42444547. The reversal of 42444544 is 44544424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42444547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82644 + ... + 83155.

Almost surely, 2^42444544 is an apocalyptic number.

It is an amenable number.

42444544 is a deficient number, since it is larger than the sum of its proper divisors (42279256).

42444544 is an equidigital number, since it uses as much as digits as its factorization.

42444544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165815 (or 165801 counting only the distinct ones).

The product of its digits is 40960, while the sum is 31.

The square root of 42444544 is about 6514.9477357842. The cubic root of 42444544 is about 348.8247492469.

Adding to 42444544 its reverse (44544424), we get a palindrome (86988968).

The spelling of 42444544 in words is "forty-two million, four hundred forty-four thousand, five hundred forty-four".