978243 has 16 divisors (see below), whose sum is σ = 1532160. Its totient is φ = 543456.

The previous prime is 978239. The next prime is 978269. The reversal of 978243 is 342879.

978243 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 978243 - 2² = 978239 is a prime.

It is an Ulam number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (978203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148 + ... + 1406.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2⁹⁷⁸²⁴³ is an apocalyptic number.

978243 is a deficient number, since it is larger than the sum of its proper divisors (553917).

978243 is a wasteful number, since it uses less digits than its factorization.

978243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306.

The product of its digits is 12096, while the sum is 33.

The square root of 978243 is about 989.0616765399. The cubic root of 978243 is about 99.2694425213.

It can be divided in two parts, 978 and 243, that added together give a palindrome (1221).

The spelling of 978243 in words is "nine hundred seventy-eight thousand, two hundred forty-three".