242421243 has 4 divisors (see below), whose sum is σ = 323228328. Its totient is φ = 161614160.

The previous prime is 242421227. The next prime is 242421269. The reversal of 242421243 is 342124242.

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 242421243 - 2⁴ = 242421227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242421043) 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, 40403538 + ... + 40403543.

It is an arithmetic number, because the mean of its divisors is an integer number (80807082).

Almost surely, 2^242421243 is an apocalyptic number.

242421243 is a deficient number, since it is larger than the sum of its proper divisors (80807085).

242421243 is an equidigital number, since it uses as much as digits as its factorization.

242421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80807084.

The product of its digits is 3072, while the sum is 24.

The square root of 242421243 is about 15569.8825621775. The cubic root of 242421243 is about 623.5293361776.

Adding to 242421243 its reverse (342124242), we get a palindrome (584545485).

The spelling of 242421243 in words is "two hundred forty-two million, four hundred twenty-one thousand, two hundred forty-three".