422443642 has 8 divisors (see below), whose sum is σ = 670939956. Its totient is φ = 198796992.

The previous prime is 422443631. The next prime is 422443649. The reversal of 422443642 is 246344224.

It can be written as a sum of positive squares in 2 ways, for example, as 365153881 + 57289761 = 19109^2 + 7569^2 .

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

It is not an unprimeable number, because it can be changed into a prime (422443649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6212373 + ... + 6212440.

Almost surely, 2^422443642 is an apocalyptic number.

422443642 is a deficient number, since it is larger than the sum of its proper divisors (248496314).

422443642 is a wasteful number, since it uses less digits than its factorization.

422443642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12424832.

The product of its digits is 36864, while the sum is 31.

The square root of 422443642 is about 20553.4338250327. The cubic root of 422443642 is about 750.3368217492.

Adding to 422443642 its reverse (246344224), we get a palindrome (668787866).

The spelling of 422443642 in words is "four hundred twenty-two million, four hundred forty-three thousand, six hundred forty-two".