420444022 has 4 divisors (see below), whose sum is σ = 630666036. Its totient is φ = 210222010.

The previous prime is 420444007. The next prime is 420444023. The reversal of 420444022 is 220444024.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 420443984 and 420444002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420444023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105111004 + ... + 105111007.

It is an arithmetic number, because the mean of its divisors is an integer number (157666509).

Almost surely, 2^420444022 is an apocalyptic number.

420444022 is a deficient number, since it is larger than the sum of its proper divisors (210222014).

420444022 is a wasteful number, since it uses less digits than its factorization.

420444022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210222013.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 420444022 is about 20504.7316978301. The cubic root of 420444022 is about 749.1510524504.

Adding to 420444022 its reverse (220444024), we get a palindrome (640888046).

The spelling of 420444022 in words is "four hundred twenty million, four hundred forty-four thousand, twenty-two".