442144342 has 16 divisors (see below), whose sum is σ = 670160160. Its totient is φ = 218769408.

The previous prime is 442144331. The next prime is 442144343. The reversal of 442144342 is 243441244.

It is a super-2 number, since 2×442144342² = 390983238325225928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442144342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442144343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77959 + ... + 83437.

It is an arithmetic number, because the mean of its divisors is an integer number (41885010).

Almost surely, 2^442144342 is an apocalyptic number.

442144342 is a deficient number, since it is larger than the sum of its proper divisors (228015818).

442144342 is a wasteful number, since it uses less digits than its factorization.

442144342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5895.

The product of its digits is 12288, while the sum is 28.

The square root of 442144342 is about 21027.2285858123. The cubic root of 442144342 is about 761.8240707739.

Adding to 442144342 its reverse (243441244), we get a palindrome (685585586).

The spelling of 442144342 in words is "four hundred forty-two million, one hundred forty-four thousand, three hundred forty-two".