442222443 has 32 divisors (see below), whose sum is σ = 706932800. Its totient is φ = 271600128.

The previous prime is 442222373. The next prime is 442222447. The reversal of 442222443 is 344222244.

It is not a de Polignac number, because 442222443 - 2¹⁰ = 442221419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442222447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247971 + ... + 249747.

It is an arithmetic number, because the mean of its divisors is an integer number (22091650).

Almost surely, 2^442222443 is an apocalyptic number.

442222443 is a deficient number, since it is larger than the sum of its proper divisors (264710357).

442222443 is a wasteful number, since it uses less digits than its factorization.

442222443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508 (or 2502 counting only the distinct ones).

The product of its digits is 12288, while the sum is 27.

The square root of 442222443 is about 21029.0856434606. The cubic root of 442222443 is about 761.8689246923.

Adding to 442222443 its reverse (344222244), we get a palindrome (786444687).

It can be divided in two parts, 44222 and 2443, that added together give a triangular number (46665 = T₃₀₅).

The spelling of 442222443 in words is "four hundred forty-two million, two hundred twenty-two thousand, four hundred forty-three".