420242224240 has 40 divisors (see below), whose sum is σ = 997851758400. Its totient is φ = 164520358656.

The previous prime is 420242224231. The next prime is 420242224247. The reversal of 420242224240 is 42422242024.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 420242224199 and 420242224208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420242224247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55879515 + ... + 55887034.

It is an arithmetic number, because the mean of its divisors is an integer number (24946293960).

Almost surely, 2^420242224240 is an apocalyptic number.

420242224240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420242224240 is an abundant number, since it is smaller than the sum of its proper divisors (577609534160).

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

420242224240 is a wasteful number, since it uses less digits than its factorization.

420242224240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111766609 (or 111766603 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 420242224240 its reverse (42422242024), we get a palindrome (462664466264).

The spelling of 420242224240 in words is "four hundred twenty billion, two hundred forty-two million, two hundred twenty-four thousand, two hundred forty".