42240442 has 8 divisors (see below), whose sum is σ = 63428832. Its totient is φ = 21097500.

The previous prime is 42240433. The next prime is 42240463. The reversal of 42240442 is 24404224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a zygodrome in base 3.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 8934 + ... + 12817.

It is an arithmetic number, because the mean of its divisors is an integer number (7928604).

Almost surely, 2^42240442 is an apocalyptic number.

42240442 is a deficient number, since it is larger than the sum of its proper divisors (21188390).

42240442 is a wasteful number, since it uses less digits than its factorization.

42240442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22724.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 42240442 is about 6499.2647276442. The cubic root of 42240442 is about 348.2647223876.

Adding to 42240442 its reverse (24404224), we get a palindrome (66644666).

The spelling of 42240442 in words is "forty-two million, two hundred forty thousand, four hundred forty-two".