42440442 has 32 divisors (see below), whose sum is σ = 92836800. Its totient is φ = 12827520.

The previous prime is 42440423. The next prime is 42440537. The reversal of 42440442 is 24404424.

It is a super-2 number, since 2×42440442² = 3602382234310728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39934 + ... + 40982.

It is an arithmetic number, because the mean of its divisors is an integer number (2901150).

Almost surely, 2^42440442 is an apocalyptic number.

42440442 is an abundant number, since it is smaller than the sum of its proper divisors (50396358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42440442 is a wasteful number, since it uses less digits than its factorization.

42440442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678.

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 42440442 is about 6514.6329136798. The cubic root of 42440442 is about 348.8135116406.

Adding to 42440442 its reverse (24404424), we get a palindrome (66844866).

The spelling of 42440442 in words is "forty-two million, four hundred forty thousand, four hundred forty-two".