42848639 has 2 divisors, whose sum is σ = 42848640. Its totient is φ = 42848638.

The previous prime is 42848633. The next prime is 42848671. The reversal of 42848639 is 93684824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42848639 - 2²⁰ = 41800063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42848639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42848633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21424319 + 21424320.

It is an arithmetic number, because the mean of its divisors is an integer number (21424320).

Almost surely, 2^42848639 is an apocalyptic number.

42848639 is a deficient number, since it is larger than the sum of its proper divisors (1).

42848639 is an equidigital number, since it uses as much as digits as its factorization.

42848639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 44.

The square root of 42848639 is about 6545.8871820403. The cubic root of 42848639 is about 349.9282546819.

The spelling of 42848639 in words is "forty-two million, eight hundred forty-eight thousand, six hundred thirty-nine".