242603 has 2 divisors, whose sum is σ = 242604. Its totient is φ = 242602.

The previous prime is 242591. The next prime is 242617. The reversal of 242603 is 306242.

242603 is nontrivially palindromic in base 12.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242603 is a prime.

It is a Sophie Germain prime.

It is equal to p₂₁₄₃₇ and since 242603 and 21437 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (242633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121301 + 121302.

It is an arithmetic number, because the mean of its divisors is an integer number (121302).

2²⁴²⁶⁰³ is an apocalyptic number.

242603 is a deficient number, since it is larger than the sum of its proper divisors (1).

242603 is an equidigital number, since it uses as much as digits as its factorization.

242603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 242603 is about 492.5474596422. The cubic root of 242603 is about 62.3685129056.

Adding to 242603 its reverse (306242), we get a palindrome (548845).

The spelling of 242603 in words is "two hundred forty-two thousand, six hundred three".