420136222 has 16 divisors (see below), whose sum is σ = 688111344. Its totient is φ = 190800000.

The previous prime is 420136217. The next prime is 420136259. The reversal of 420136222 is 222631024.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 420136193 and 420136202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18472 + ... + 34372.

It is an arithmetic number, because the mean of its divisors is an integer number (43006959).

Almost surely, 2^420136222 is an apocalyptic number.

420136222 is a deficient number, since it is larger than the sum of its proper divisors (267975122).

420136222 is a wasteful number, since it uses less digits than its factorization.

420136222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17115.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 420136222 is about 20497.2247389738. The cubic root of 420136222 is about 748.9681941904.

Adding to 420136222 its reverse (222631024), we get a palindrome (642767246).

The spelling of 420136222 in words is "four hundred twenty million, one hundred thirty-six thousand, two hundred twenty-two".