978143 has 8 divisors (see below), whose sum is σ = 1021440. Its totient is φ = 935640.

The previous prime is 978113. The next prime is 978149. The reversal of 978143 is 341879.

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

It is a cyclic number.

It is not a de Polignac number, because 978143 - 2⁶ = 978079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 978143.

It is not an unprimeable number, because it can be changed into a prime (978149) 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, 4196 + ... + 4422.

It is an arithmetic number, because the mean of its divisors is an integer number (127680).

2⁹⁷⁸¹⁴³ is an apocalyptic number.

978143 is a deficient number, since it is larger than the sum of its proper divisors (43297).

978143 is a wasteful number, since it uses less digits than its factorization.

978143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its digits is 6048, while the sum is 32.

The square root of 978143 is about 989.0111222833. The cubic root of 978143 is about 99.2660598299.

The spelling of 978143 in words is "nine hundred seventy-eight thousand, one hundred forty-three".