420242404442 has 16 divisors (see below), whose sum is σ = 720568197312. Its totient is φ = 180065725920.

The previous prime is 420242404433. The next prime is 420242404457. The reversal of 420242404442 is 244404242024.

It is a junction number, because it is equal to n+sod(n) for n = 420242404399 and 420242404408.

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, 3111659 + ... + 3243902.

It is an arithmetic number, because the mean of its divisors is an integer number (45035512332).

Almost surely, 2^420242404442 is an apocalyptic number.

420242404442 is a deficient number, since it is larger than the sum of its proper divisors (300325792870).

420242404442 is a wasteful number, since it uses less digits than its factorization.

420242404442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6360293.

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 420242404442 its reverse (244404242024), we get a palindrome (664646646466).

The spelling of 420242404442 in words is "four hundred twenty billion, two hundred forty-two million, four hundred four thousand, four hundred forty-two".