420220440220 has 96 divisors (see below), whose sum is σ = 1027650032640. Its totient is φ = 141368747520.

The previous prime is 420220440217. The next prime is 420220440281. The reversal of 420220440220 is 22044022024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 420220440191 and 420220440200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1503537 + ... + 1760983.

It is an arithmetic number, because the mean of its divisors is an integer number (10704687840).

Almost surely, 2^420220440220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420220440220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513825016320).

420220440220 is an abundant number, since it is smaller than the sum of its proper divisors (607429592420).

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

420220440220 is a wasteful number, since it uses less digits than its factorization.

420220440220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257683 (or 257681 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 420220440220 its reverse (22044022024), we get a palindrome (442264462244).

It can be divided in two parts, 4202204 and 40220, that added together give a palindrome (4242424).

The spelling of 420220440220 in words is "four hundred twenty billion, two hundred twenty million, four hundred forty thousand, two hundred twenty".