42818559 has 8 divisors (see below), whose sum is σ = 65247360. Its totient is φ = 24467736.

The previous prime is 42818549. The next prime is 42818569. The reversal of 42818559 is 95581824.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42818549) and next prime (42818569).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42818559 - 2⁴ = 42818543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42818559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42818519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1019469 + ... + 1019510.

It is an arithmetic number, because the mean of its divisors is an integer number (8155920).

Almost surely, 2^42818559 is an apocalyptic number.

42818559 is a deficient number, since it is larger than the sum of its proper divisors (22428801).

42818559 is a wasteful number, since it uses less digits than its factorization.

42818559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038989.

The product of its digits is 115200, while the sum is 42.

The square root of 42818559 is about 6543.5891527510. The cubic root of 42818559 is about 349.8463516065.

The spelling of 42818559 in words is "forty-two million, eight hundred eighteen thousand, five hundred fifty-nine".