42442424 has 8 divisors (see below), whose sum is σ = 79579560. Its totient is φ = 21221208.

The previous prime is 42442403. The next prime is 42442427. The reversal of 42442424 is 42424424.

It is a tau number, because it is divible by the number of its divisors (8).

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

It is a junction number, because it is equal to n+sod(n) for n = 42442393 and 42442402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42442427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2652644 + ... + 2652659.

It is an arithmetic number, because the mean of its divisors is an integer number (9947445).

Almost surely, 2^42442424 is an apocalyptic number.

It is an amenable number.

42442424 is a deficient number, since it is larger than the sum of its proper divisors (37137136).

42442424 is a wasteful number, since it uses less digits than its factorization.

42442424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305309 (or 5305305 counting only the distinct ones).

The product of its digits is 8192, while the sum is 26.

The square root of 42442424 is about 6514.7850309891. The cubic root of 42442424 is about 348.8189415057.

Adding to 42442424 its reverse (42424424), we get a palindrome (84866848).

The spelling of 42442424 in words is "forty-two million, four hundred forty-two thousand, four hundred twenty-four".