420442120144 has 20 divisors (see below), whose sum is σ = 816487929796. Its totient is φ = 209735557632.

The previous prime is 420442120069. The next prime is 420442120181. The reversal of 420442120144 is 441021244024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14978822544 + 405463297600 = 122388^2 + 636760^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30336759 + ... + 30350614.

Almost surely, 2^420442120144 is an apocalyptic number.

It is an amenable number.

420442120144 is a deficient number, since it is larger than the sum of its proper divisors (396045809652).

420442120144 is a wasteful number, since it uses less digits than its factorization.

420442120144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60687814 (or 60687808 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 420442120144 its reverse (441021244024), we get a palindrome (861463364168).

The spelling of 420442120144 in words is "four hundred twenty billion, four hundred forty-two million, one hundred twenty thousand, one hundred forty-four".