978242 has 8 divisors (see below), whose sum is σ = 1471932. Its totient is φ = 487600.

The previous prime is 978239. The next prime is 978269. The reversal of 978242 is 242879.

It can be written as a sum of positive squares in 2 ways, for example, as 978121 + 121 = 989^2 + 11^2 .

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

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 978199 and 978208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392 + ... + 1452.

2⁹⁷⁸²⁴² is an apocalyptic number.

978242 is a deficient number, since it is larger than the sum of its proper divisors (493690).

978242 is a wasteful number, since it uses less digits than its factorization.

978242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524.

The product of its digits is 8064, while the sum is 32.

The square root of 978242 is about 989.0611710102. The cubic root of 978242 is about 99.2694086956.

The spelling of 978242 in words is "nine hundred seventy-eight thousand, two hundred forty-two".