420002222 has 4 divisors (see below), whose sum is σ = 630003336. Its totient is φ = 210001110.

The previous prime is 420002213. The next prime is 420002267. The reversal of 420002222 is 222200024.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 420002197 and 420002206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000554 + ... + 105000557.

It is an arithmetic number, because the mean of its divisors is an integer number (157500834).

Almost surely, 2^420002222 is an apocalyptic number.

420002222 is a deficient number, since it is larger than the sum of its proper divisors (210001114).

420002222 is a wasteful number, since it uses less digits than its factorization.

420002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210001113.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 420002222 is about 20493.9557430965. The cubic root of 420002222 is about 748.8885593762. Note that the first 3 decimals are identical.

Adding to 420002222 its reverse (222200024), we get a palindrome (642202246).

The spelling of 420002222 in words is "four hundred twenty million, two thousand, two hundred twenty-two".