42233809 has 2 divisors, whose sum is σ = 42233810. Its totient is φ = 42233808.

The previous prime is 42233801. The next prime is 42233833. The reversal of 42233809 is 90833224.

42233809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26749584 + 15484225 = 5172^2 + 3935^2 .

It is a cyclic number.

It is not a de Polignac number, because 42233809 - 2³ = 42233801 is a prime.

It is not a weakly prime, because it can be changed into another prime (42233801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21116904 + 21116905.

It is an arithmetic number, because the mean of its divisors is an integer number (21116905).

Almost surely, 2^42233809 is an apocalyptic number.

It is an amenable number.

42233809 is a deficient number, since it is larger than the sum of its proper divisors (1).

42233809 is an equidigital number, since it uses as much as digits as its factorization.

42233809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 42233809 is about 6498.7544191176. The cubic root of 42233809 is about 348.2464921425.

The spelling of 42233809 in words is "forty-two million, two hundred thirty-three thousand, eight hundred nine".