4242440422420 has 12 divisors (see below), whose sum is σ = 8909124887124. Its totient is φ = 1696976168960.

The previous prime is 4242440422397. The next prime is 4242440422427. The reversal of 4242440422420 is 242240442424.

It can be written as a sum of positive squares in 2 ways, for example, as 547602960004 + 3694837462416 = 740002^2 + 1922196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242440422427) 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, 106061010541 + ... + 106061010580.

It is an arithmetic number, because the mean of its divisors is an integer number (742427073927).

Almost surely, 2^{4242440422420} is an apocalyptic number.

It is an amenable number.

4242440422420 is an abundant number, since it is smaller than the sum of its proper divisors (4666684464704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4242440422420 is a wasteful number, since it uses less digits than its factorization.

4242440422420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212122021130 (or 212122021128 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 4242440422420 its reverse (242240442424), we get a palindrome (4484680864844).

The spelling of 4242440422420 in words is "four trillion, two hundred forty-two billion, four hundred forty million, four hundred twenty-two thousand, four hundred twenty".