42422144 has 16 divisors (see below), whose sum is σ = 84513120. Its totient is φ = 21211008.

The previous prime is 42422141. The next prime is 42422147. The reversal of 42422144 is 44122424.

It is an interprime number because it is at equal distance from previous prime (42422141) and next prime (42422147).

It is a tau number, because it is divible by the number of its divisors (16).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42422141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165584 + ... + 165839.

It is an arithmetic number, because the mean of its divisors is an integer number (5282070).

Almost surely, 2^42422144 is an apocalyptic number.

It is an amenable number.

42422144 is a deficient number, since it is larger than the sum of its proper divisors (42090976).

42422144 is an equidigital number, since it uses as much as digits as its factorization.

42422144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331437 (or 331425 counting only the distinct ones).

The product of its digits is 2048, while the sum is 23.

The square root of 42422144 is about 6513.2283853708. The cubic root of 42422144 is about 348.7633746578.

Adding to 42422144 its reverse (44122424), we get a palindrome (86544568).

The spelling of 42422144 in words is "forty-two million, four hundred twenty-two thousand, one hundred forty-four".