420022243442 has 16 divisors (see below), whose sum is σ = 645452799264. Its totient is φ = 204872148000.

The previous prime is 420022243439. The next prime is 420022243451. The reversal of 420022243442 is 244342220024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831017 + ... + 1237187.

It is an arithmetic number, because the mean of its divisors is an integer number (40340799954).

Almost surely, 2^420022243442 is an apocalyptic number.

420022243442 is a deficient number, since it is larger than the sum of its proper divisors (225430555822).

420022243442 is a wasteful number, since it uses less digits than its factorization.

420022243442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418825.

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 420022243442 its reverse (244342220024), we get a palindrome (664364463466).

The spelling of 420022243442 in words is "four hundred twenty billion, twenty-two million, two hundred forty-three thousand, four hundred forty-two".