42934939 has 2 divisors, whose sum is σ = 42934940. Its totient is φ = 42934938.

The previous prime is 42934921. The next prime is 42934961. The reversal of 42934939 is 93943924.

42934939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42934939 - 2⁹ = 42934427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42934895 and 42934904.

It is not a weakly prime, because it can be changed into another prime (42934909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21467469 + 21467470.

It is an arithmetic number, because the mean of its divisors is an integer number (21467470).

Almost surely, 2^42934939 is an apocalyptic number.

42934939 is a deficient number, since it is larger than the sum of its proper divisors (1).

42934939 is an equidigital number, since it uses as much as digits as its factorization.

42934939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 43.

The square root of 42934939 is about 6552.4757916378. The cubic root of 42934939 is about 350.1630233747.

The spelling of 42934939 in words is "forty-two million, nine hundred thirty-four thousand, nine hundred thirty-nine".