42683909 has 2 divisors, whose sum is σ = 42683910. Its totient is φ = 42683908.

The previous prime is 42683897. The next prime is 42683939. The reversal of 42683909 is 90938624.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39062500 + 3621409 = 6250^2 + 1903^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42683909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42683939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21341954 + 21341955.

It is an arithmetic number, because the mean of its divisors is an integer number (21341955).

Almost surely, 2^42683909 is an apocalyptic number.

It is an amenable number.

42683909 is a deficient number, since it is larger than the sum of its proper divisors (1).

42683909 is an equidigital number, since it uses as much as digits as its factorization.

42683909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 42683909 is about 6533.2923553137. The cubic root of 42683909 is about 349.4792500727.

The spelling of 42683909 in words is "forty-two million, six hundred eighty-three thousand, nine hundred nine".