42799423 has 2 divisors, whose sum is σ = 42799424. Its totient is φ = 42799422.

The previous prime is 42799409. The next prime is 42799429. The reversal of 42799423 is 32499724.

42799423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42799423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42799429) 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, 21399711 + 21399712.

It is an arithmetic number, because the mean of its divisors is an integer number (21399712).

Almost surely, 2^42799423 is an apocalyptic number.

42799423 is a deficient number, since it is larger than the sum of its proper divisors (1).

42799423 is an equidigital number, since it uses as much as digits as its factorization.

42799423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 42799423 is about 6542.1267948581. The cubic root of 42799423 is about 349.7942273448.

The spelling of 42799423 in words is "forty-two million, seven hundred ninety-nine thousand, four hundred twenty-three".