420042226 has 4 divisors (see below), whose sum is σ = 630063342. Its totient is φ = 210021112.

The previous prime is 420042221. The next prime is 420042257. The reversal of 420042226 is 622240024.

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

It can be written as a sum of positive squares in only one way, i.e., 244453225 + 175589001 = 15635^2 + 13251^2 .

It is a junction number, because it is equal to n+sod(n) for n = 420042197 and 420042206.

It is not an unprimeable number, because it can be changed into a prime (420042221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010555 + ... + 105010558.

Almost surely, 2^420042226 is an apocalyptic number.

420042226 is a deficient number, since it is larger than the sum of its proper divisors (210021116).

420042226 is a wasteful number, since it uses less digits than its factorization.

420042226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210021115.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 420042226 is about 20494.9317149387. The cubic root of 420042226 is about 748.9123351130.

The spelling of 420042226 in words is "four hundred twenty million, forty-two thousand, two hundred twenty-six".