42447226 has 4 divisors (see below), whose sum is σ = 63670842. Its totient is φ = 21223612.

The previous prime is 42447217. The next prime is 42447233. The reversal of 42447226 is 62274424.

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., 24000201 + 18447025 = 4899^2 + 4295^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611805 + ... + 10611808.

Almost surely, 2^42447226 is an apocalyptic number.

42447226 is a deficient number, since it is larger than the sum of its proper divisors (21223616).

42447226 is a wasteful number, since it uses less digits than its factorization.

42447226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21223615.

The product of its digits is 21504, while the sum is 31.

The square root of 42447226 is about 6515.1535668778. The cubic root of 42447226 is about 348.8320963103.

The spelling of 42447226 in words is "forty-two million, four hundred forty-seven thousand, two hundred twenty-six".