42806983 has 2 divisors, whose sum is σ = 42806984. Its totient is φ = 42806982.

The previous prime is 42806971. The next prime is 42807029. The reversal of 42806983 is 38960824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42806983 - 2⁹ = 42806471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42806963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21403491 + 21403492.

It is an arithmetic number, because the mean of its divisors is an integer number (21403492).

Almost surely, 2^42806983 is an apocalyptic number.

42806983 is a deficient number, since it is larger than the sum of its proper divisors (1).

42806983 is an equidigital number, since it uses as much as digits as its factorization.

42806983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 42806983 is about 6542.7045630993. The cubic root of 42806983 is about 349.8148217710.

The spelling of 42806983 in words is "forty-two million, eight hundred six thousand, nine hundred eighty-three".