42798 has 16 divisors (see below), whose sum is σ = 97920. Its totient is φ = 12216.

The previous prime is 42797. The next prime is 42821. The reversal of 42798 is 89724.

42798 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 8.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42793) 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, 468 + ... + 551.

It is an arithmetic number, because the mean of its divisors is an integer number (6120).

2⁴²⁷⁹⁸ is an apocalyptic number.

42798 is an abundant number, since it is smaller than the sum of its proper divisors (55122).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48960).

42798 is a wasteful number, since it uses less digits than its factorization.

42798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its digits is 4032, while the sum is 30.

The square root of 42798 is about 206.8767749169. The cubic root of 42798 is about 34.9790350636.

It can be divided in two parts, 427 and 98, that added together give a palindrome (525).

The spelling of 42798 in words is "forty-two thousand, seven hundred ninety-eight".