42805603 has 2 divisors, whose sum is σ = 42805604. Its totient is φ = 42805602.

The previous prime is 42805589. The next prime is 42805619. The reversal of 42805603 is 30650824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42805603 - 2¹⁷ = 42674531 is a prime.

It is not a weakly prime, because it can be changed into another prime (42805003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21402801 + 21402802.

It is an arithmetic number, because the mean of its divisors is an integer number (21402802).

Almost surely, 2^42805603 is an apocalyptic number.

42805603 is a deficient number, since it is larger than the sum of its proper divisors (1).

42805603 is an equidigital number, since it uses as much as digits as its factorization.

42805603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 42805603 is about 6542.5991012747. The cubic root of 42805603 is about 349.8110626519.

The spelling of 42805603 in words is "forty-two million, eight hundred five thousand, six hundred three".