242440403 has 4 divisors (see below), whose sum is σ = 242475480. Its totient is φ = 242405328.

The previous prime is 242440369. The next prime is 242440459. The reversal of 242440403 is 304044242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304044242 = 2 ⋅152022121.

It is a cyclic number.

It is not a de Polignac number, because 242440403 - 2²⁴ = 225663187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242440463) 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, 3338 + ... + 22271.

It is an arithmetic number, because the mean of its divisors is an integer number (60618870).

Almost surely, 2^242440403 is an apocalyptic number.

242440403 is a deficient number, since it is larger than the sum of its proper divisors (35077).

242440403 is an equidigital number, since it uses as much as digits as its factorization.

242440403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35076.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 242440403 is about 15570.4978404674. The cubic root of 242440403 is about 623.5457628285.

Adding to 242440403 its reverse (304044242), we get a palindrome (546484645).

The spelling of 242440403 in words is "two hundred forty-two million, four hundred forty thousand, four hundred three".