440042442 has 48 divisors (see below), whose sum is σ = 1025649792. Its totient is φ = 125496000.

The previous prime is 440042437. The next prime is 440042459. The reversal of 440042442 is 244240044.

It is a super-2 number, since 2×440042442² = 387274701522646728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219798 + ... + 221790.

It is an arithmetic number, because the mean of its divisors is an integer number (21367704).

Almost surely, 2^440042442 is an apocalyptic number.

440042442 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

440042442 is an abundant number, since it is smaller than the sum of its proper divisors (585607350).

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

440042442 is a wasteful number, since it uses less digits than its factorization.

440042442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763 (or 2756 counting only the distinct ones).

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

The square root of 440042442 is about 20977.1886104883. The cubic root of 440042442 is about 760.6149466552.

Adding to 440042442 its reverse (244240044), we get a palindrome (684282486).

The spelling of 440042442 in words is "four hundred forty million, forty-two thousand, four hundred forty-two".