42238226 has 4 divisors (see below), whose sum is σ = 63357342. Its totient is φ = 21119112.

The previous prime is 42238223. The next prime is 42238237. The reversal of 42238226 is 62283224.

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., 42237001 + 1225 = 6499^2 + 35^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42238223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10559555 + ... + 10559558.

Almost surely, 2^42238226 is an apocalyptic number.

42238226 is a deficient number, since it is larger than the sum of its proper divisors (21119116).

42238226 is a wasteful number, since it uses less digits than its factorization.

42238226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21119115.

The product of its digits is 9216, while the sum is 29.

The square root of 42238226 is about 6499.0942445852. The cubic root of 42238226 is about 348.2586321094.

The spelling of 42238226 in words is "forty-two million, two hundred thirty-eight thousand, two hundred twenty-six".