420222420 has 72 divisors (see below), whose sum is σ = 1330108416. Its totient is φ = 107186112.

The previous prime is 420222419. The next prime is 420222427. The reversal of 420222420 is 24222024.

420222420 is a `hidden beast` number, since 4 + 20 + 222 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 420222393 and 420222402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420222427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46612 + ... + 54891.

It is an arithmetic number, because the mean of its divisors is an integer number (18473728).

Almost surely, 2^420222420 is an apocalyptic number.

It is an amenable number.

420222420 is an abundant number, since it is smaller than the sum of its proper divisors (909885996).

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

420222420 is a wasteful number, since it uses less digits than its factorization.

420222420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101541 (or 101536 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 420222420 is about 20499.3273060362. The cubic root of 420222420 is about 749.0194118212.

Adding to 420222420 its reverse (24222024), we get a palindrome (444444444).

The spelling of 420222420 in words is "four hundred twenty million, two hundred twenty-two thousand, four hundred twenty".