42522839 has 2 divisors, whose sum is σ = 42522840. Its totient is φ = 42522838.

The previous prime is 42522833. The next prime is 42522841. The reversal of 42522839 is 93822524.

42522839 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 not a de Polignac number, because 42522839 - 2²⁴ = 25745623 is a prime.

Together with 42522841, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42522799 and 42522808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42522833) 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, 21261419 + 21261420.

It is an arithmetic number, because the mean of its divisors is an integer number (21261420).

Almost surely, 2^42522839 is an apocalyptic number.

42522839 is a deficient number, since it is larger than the sum of its proper divisors (1).

42522839 is an equidigital number, since it uses as much as digits as its factorization.

42522839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 42522839 is about 6520.9538412720. The cubic root of 42522839 is about 349.0391031246.

The spelling of 42522839 in words is "forty-two million, five hundred twenty-two thousand, eight hundred thirty-nine".