442222431 has 8 divisors (see below), whose sum is σ = 673862784. Its totient is φ = 252698520.

The previous prime is 442222373. The next prime is 442222447. The reversal of 442222431 is 134222244.

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

It is not a de Polignac number, because 442222431 - 2¹⁰ = 442221407 is a prime.

It is a super-2 number, since 2×442222431² = 391121356959099522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442222031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10529085 + ... + 10529126.

It is an arithmetic number, because the mean of its divisors is an integer number (84232848).

Almost surely, 2^442222431 is an apocalyptic number.

442222431 is a deficient number, since it is larger than the sum of its proper divisors (231640353).

442222431 is a wasteful number, since it uses less digits than its factorization.

442222431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21058221.

The product of its digits is 3072, while the sum is 24.

The square root of 442222431 is about 21029.0853581415. The cubic root of 442222431 is about 761.8689178010.

Adding to 442222431 its reverse (134222244), we get a palindrome (576444675).

It can be divided in two parts, 44222243 and 1, that added together give a palindrome (44222244).

The spelling of 442222431 in words is "four hundred forty-two million, two hundred twenty-two thousand, four hundred thirty-one".