42238307 has 2 divisors, whose sum is σ = 42238308. Its totient is φ = 42238306.

The previous prime is 42238303. The next prime is 42238321. The reversal of 42238307 is 70383224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42238307 - 2² = 42238303 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42238307.

It is not a weakly prime, because it can be changed into another prime (42238303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21119153 + 21119154.

It is an arithmetic number, because the mean of its divisors is an integer number (21119154).

Almost surely, 2^42238307 is an apocalyptic number.

42238307 is a deficient number, since it is larger than the sum of its proper divisors (1).

42238307 is an equidigital number, since it uses as much as digits as its factorization.

42238307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 42238307 is about 6499.1004762198. The cubic root of 42238307 is about 348.2588547272.

The spelling of 42238307 in words is "forty-two million, two hundred thirty-eight thousand, three hundred seven".