242404623 has 8 divisors (see below), whose sum is σ = 359118000. Its totient is φ = 161603064.

The previous prime is 242404609. The next prime is 242404637. The reversal of 242404623 is 326404242.

It is an interprime number because it is at equal distance from previous prime (242404609) and next prime (242404637).

It is not a de Polignac number, because 242404623 - 2⁸ = 242404367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8977949 = 242404623 / (2 + 4 + 2 + 4 + 0 + 4 + 6 + 2 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242404693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4488948 + ... + 4489001.

It is an arithmetic number, because the mean of its divisors is an integer number (44889750).

Almost surely, 2^242404623 is an apocalyptic number.

242404623 is a deficient number, since it is larger than the sum of its proper divisors (116713377).

242404623 is an equidigital number, since it uses as much as digits as its factorization.

242404623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8977958 (or 8977952 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 242404623 is about 15569.3488303140. The cubic root of 242404623 is about 623.5150864715.

Adding to 242404623 its reverse (326404242), we get a palindrome (568808865).

The spelling of 242404623 in words is "two hundred forty-two million, four hundred four thousand, six hundred twenty-three".