42034939 has 2 divisors, whose sum is σ = 42034940. Its totient is φ = 42034938.

The previous prime is 42034919. The next prime is 42034981. The reversal of 42034939 is 93943024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42034939 - 2²¹ = 39937787 is a prime.

It is not a weakly prime, because it can be changed into another prime (42034919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21017469 + 21017470.

It is an arithmetic number, because the mean of its divisors is an integer number (21017470).

Almost surely, 2^42034939 is an apocalyptic number.

42034939 is a deficient number, since it is larger than the sum of its proper divisors (1).

42034939 is an equidigital number, since it uses as much as digits as its factorization.

42034939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 42034939 is about 6483.4357404080. The cubic root of 42034939 is about 347.6990257851.

The spelling of 42034939 in words is "forty-two million, thirty-four thousand, nine hundred thirty-nine".