842238226 has 4 divisors (see below), whose sum is σ = 1263357342. Its totient is φ = 421119112.

The previous prime is 842238223. The next prime is 842238227. The reversal of 842238226 is 622832248.

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., 618765625 + 223472601 = 24875^2 + 14949^2 .

It is not an unprimeable number, because it can be changed into a prime (842238223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210559555 + ... + 210559558.

Almost surely, 2^842238226 is an apocalyptic number.

842238226 is a deficient number, since it is larger than the sum of its proper divisors (421119116).

842238226 is a wasteful number, since it uses less digits than its factorization.

842238226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421119115.

The product of its digits is 73728, while the sum is 37.

The square root of 842238226 is about 29021.3408718481. The cubic root of 842238226 is about 944.3760897621.

The spelling of 842238226 in words is "eight hundred forty-two million, two hundred thirty-eight thousand, two hundred twenty-six".