42839603 has 2 divisors, whose sum is σ = 42839604. Its totient is φ = 42839602.

The previous prime is 42839591. The next prime is 42839611. The reversal of 42839603 is 30693824.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42839603 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42839663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21419801 + 21419802.

It is an arithmetic number, because the mean of its divisors is an integer number (21419802).

Almost surely, 2^42839603 is an apocalyptic number.

42839603 is a deficient number, since it is larger than the sum of its proper divisors (1).

42839603 is an equidigital number, since it uses as much as digits as its factorization.

42839603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 42839603 is about 6545.1969412692. The cubic root of 42839603 is about 349.9036551141.

The spelling of 42839603 in words is "forty-two million, eight hundred thirty-nine thousand, six hundred three".