42163444 has 12 divisors (see below), whose sum is σ = 74996068. Its totient is φ = 20736000.

The previous prime is 42163423. The next prime is 42163463. The reversal of 42163444 is 44436124.

42163444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 22467600 + 19695844 = 4740^2 + 4438^2 .

It is a super-2 number, since 2×42163444² = 3555512019882272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86157 + ... + 86644.

Almost surely, 2^42163444 is an apocalyptic number.

It is an amenable number.

42163444 is a deficient number, since it is larger than the sum of its proper divisors (32832624).

42163444 is a wasteful number, since it uses less digits than its factorization.

42163444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172866 (or 172864 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

The square root of 42163444 is about 6493.3384325784. The cubic root of 42163444 is about 348.0529822005.

Adding to 42163444 its reverse (44436124), we get a palindrome (86599568).

The spelling of 42163444 in words is "forty-two million, one hundred sixty-three thousand, four hundred forty-four".