42550444 has 12 divisors (see below), whose sum is σ = 76476064. Its totient is φ = 20700144.

The previous prime is 42550421. The next prime is 42550447. The reversal of 42550444 is 44405524.

It is not an unprimeable number, because it can be changed into a prime (42550447) 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, 143604 + ... + 143899.

Almost surely, 2^42550444 is an apocalyptic number.

It is an amenable number.

42550444 is a deficient number, since it is larger than the sum of its proper divisors (33925620).

42550444 is a wasteful number, since it uses less digits than its factorization.

42550444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287544 (or 287542 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 42550444 is about 6523.0701360632. The cubic root of 42550444 is about 349.1146165852.

Adding to 42550444 its reverse (44405524), we get a palindrome (86955968).

The spelling of 42550444 in words is "forty-two million, five hundred fifty thousand, four hundred forty-four".