42794839 has 2 divisors, whose sum is σ = 42794840. Its totient is φ = 42794838.

The previous prime is 42794819. The next prime is 42794861. The reversal of 42794839 is 93849724.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42794839 - 2¹⁷ = 42663767 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42794819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21397419 + 21397420.

It is an arithmetic number, because the mean of its divisors is an integer number (21397420).

Almost surely, 2^42794839 is an apocalyptic number.

42794839 is a deficient number, since it is larger than the sum of its proper divisors (1).

42794839 is an equidigital number, since it uses as much as digits as its factorization.

42794839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 42794839 is about 6541.7764406925. The cubic root of 42794839 is about 349.7817387497.

It can be divided in two parts, 427 and 94839, that added together give a triangular number (95266 = T₄₃₆).

The spelling of 42794839 in words is "forty-two million, seven hundred ninety-four thousand, eight hundred thirty-nine".