42818544 has 70 divisors (see below), whose sum is σ = 124418376. Its totient is φ = 14268960.

The previous prime is 42818543. The next prime is 42818549. The reversal of 42818544 is 44581824.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 42818499 and 42818508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42818543) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 9829 + ... + 13499.

Almost surely, 2^42818544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42818544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62209188).

42818544 is an abundant number, since it is smaller than the sum of its proper divisors (81599832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42818544 is an equidigital number, since it uses as much as digits as its factorization.

42818544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697 (or 3676 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 42818544 is about 6543.5880065909. The cubic root of 42818544 is about 349.8463107544.

The spelling of 42818544 in words is "forty-two million, eight hundred eighteen thousand, five hundred forty-four".