42242432 has 16 divisors (see below), whose sum is σ = 84155100. Its totient is φ = 21121152.

The previous prime is 42242413. The next prime is 42242437. The reversal of 42242432 is 23424224.

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

It is a super-2 number, since 2×42242432² = 3568846122549248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42242398 and 42242407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42242437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164882 + ... + 165137.

Almost surely, 2^42242432 is an apocalyptic number.

It is an amenable number.

42242432 is a deficient number, since it is larger than the sum of its proper divisors (41912668).

42242432 is an equidigital number, since it uses as much as digits as its factorization.

42242432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330033 (or 330021 counting only the distinct ones).

The product of its digits is 3072, while the sum is 23.

The square root of 42242432 is about 6499.4178200820. The cubic root of 42242432 is about 348.2701913638.

Adding to 42242432 its reverse (23424224), we get a palindrome (65666656).

The spelling of 42242432 in words is "forty-two million, two hundred forty-two thousand, four hundred thirty-two".