974143243 has 4 divisors (see below), whose sum is σ = 1025413960. Its totient is φ = 922872528.

The previous prime is 974143237. The next prime is 974143259. The reversal of 974143243 is 342341479.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 974143243 - 2⁹ = 974142731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (974143273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25635330 + ... + 25635367.

It is an arithmetic number, because the mean of its divisors is an integer number (256353490).

Almost surely, 2^974143243 is an apocalyptic number.

974143243 is a deficient number, since it is larger than the sum of its proper divisors (51270717).

974143243 is a wasteful number, since it uses less digits than its factorization.

974143243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51270716.

The product of its digits is 72576, while the sum is 37.

The square root of 974143243 is about 31211.2678851725. The cubic root of 974143243 is about 991.3057093798.

The spelling of 974143243 in words is "nine hundred seventy-four million, one hundred forty-three thousand, two hundred forty-three".