42339943 has 2 divisors, whose sum is σ = 42339944. Its totient is φ = 42339942.

The previous prime is 42339937. The next prime is 42339949. The reversal of 42339943 is 34993324.

It is a balanced prime because it is at equal distance from previous prime (42339937) and next prime (42339949).

It is a cyclic number.

It is not a de Polignac number, because 42339943 - 2⁹ = 42339431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42339949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21169971 + 21169972.

It is an arithmetic number, because the mean of its divisors is an integer number (21169972).

Almost surely, 2^42339943 is an apocalyptic number.

42339943 is a deficient number, since it is larger than the sum of its proper divisors (1).

42339943 is an equidigital number, since it uses as much as digits as its factorization.

42339943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 37.

The square root of 42339943 is about 6506.9150140447. The cubic root of 42339943 is about 348.5379638037.

The spelling of 42339943 in words is "forty-two million, three hundred thirty-nine thousand, nine hundred forty-three".