242403 has 24 divisors (see below), whose sum is σ = 402192. Its totient is φ = 129024.

The previous prime is 242399. The next prime is 242413. The reversal of 242403 is 304242.

It is a happy number.

It is not a de Polignac number, because 242403 - 2² = 242399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2451 + ... + 2547.

It is an arithmetic number, because the mean of its divisors is an integer number (16758).

2²⁴²⁴⁰³ is an apocalyptic number.

242403 is a deficient number, since it is larger than the sum of its proper divisors (159789).

242403 is a wasteful number, since it uses less digits than its factorization.

242403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 242403 is about 492.3443916610. The cubic root of 242403 is about 62.3513694904.

Adding to 242403 its reverse (304242), we get a palindrome (546645).

The spelling of 242403 in words is "two hundred forty-two thousand, four hundred three", and thus it is an iban number.