420525222 has 16 divisors (see below), whose sum is σ = 905746800. Its totient is φ = 129392352.

The previous prime is 420525197. The next prime is 420525241. The reversal of 420525222 is 222525024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 420525192 and 420525201.

It is a congruent number.

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, 2695597 + ... + 2695752.

It is an arithmetic number, because the mean of its divisors is an integer number (56609175).

Almost surely, 2^420525222 is an apocalyptic number.

420525222 is an abundant number, since it is smaller than the sum of its proper divisors (485221578).

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

420525222 is a wasteful number, since it uses less digits than its factorization.

420525222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5391367.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 420525222 is about 20506.7116330240. The cubic root of 420525222 is about 749.1992769833.

It can be divided in two parts, 42052 and 5222, that added together give a palindrome (47274).

The spelling of 420525222 in words is "four hundred twenty million, five hundred twenty-five thousand, two hundred twenty-two".