42247306 has 4 divisors (see below), whose sum is σ = 63370962. Its totient is φ = 21123652.

The previous prime is 42247301. The next prime is 42247333. The reversal of 42247306 is 60374224.

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., 24950025 + 17297281 = 4995^2 + 4159^2 .

It is not an unprimeable number, because it can be changed into a prime (42247301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561825 + ... + 10561828.

Almost surely, 2^42247306 is an apocalyptic number.

42247306 is a deficient number, since it is larger than the sum of its proper divisors (21123656).

42247306 is a wasteful number, since it uses less digits than its factorization.

42247306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21123655.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 42247306 is about 6499.7927659272. The cubic root of 42247306 is about 348.2835855076.

The spelling of 42247306 in words is "forty-two million, two hundred forty-seven thousand, three hundred six".