242947983 has 4 divisors (see below), whose sum is σ = 323930648. Its totient is φ = 161965320.

The previous prime is 242947981. The next prime is 242948009. The reversal of 242947983 is 389749242.

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

It is not a de Polignac number, because 242947983 - 2¹ = 242947981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242947981) 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, 40491328 + ... + 40491333.

It is an arithmetic number, because the mean of its divisors is an integer number (80982662).

Almost surely, 2^242947983 is an apocalyptic number.

242947983 is a deficient number, since it is larger than the sum of its proper divisors (80982665).

242947983 is an equidigital number, since it uses as much as digits as its factorization.

242947983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80982664.

The product of its digits is 870912, while the sum is 48.

The square root of 242947983 is about 15586.7887327698. The cubic root of 242947983 is about 623.9806171042.

The spelling of 242947983 in words is "two hundred forty-two million, nine hundred forty-seven thousand, nine hundred eighty-three".