42983009 has 2 divisors, whose sum is σ = 42983010. Its totient is φ = 42983008.

The previous prime is 42982967. The next prime is 42983029. The reversal of 42983009 is 90038924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33814225 + 9168784 = 5815^2 + 3028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42983009 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 42983009.

It is not a weakly prime, because it can be changed into another prime (42983029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21491504 + 21491505.

It is an arithmetic number, because the mean of its divisors is an integer number (21491505).

Almost surely, 2^42983009 is an apocalyptic number.

It is an amenable number.

42983009 is a deficient number, since it is larger than the sum of its proper divisors (1).

42983009 is an equidigital number, since it uses as much as digits as its factorization.

42983009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 42983009 is about 6556.1428446915. The cubic root of 42983009 is about 350.2936555902.

It can be divided in two parts, 429 and 83009, that added together give a palindrome (83438).

The spelling of 42983009 in words is "forty-two million, nine hundred eighty-three thousand, nine".