242121103 has 6 divisors (see below), whose sum is σ = 281651136. Its totient is φ = 207532332.

The previous prime is 242121097. The next prime is 242121127. The reversal of 242121103 is 301121242.

It is not a de Polignac number, because 242121103 - 2¹⁷ = 241990031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242121133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2470575 + ... + 2470672.

It is an arithmetic number, because the mean of its divisors is an integer number (46941856).

Almost surely, 2^242121103 is an apocalyptic number.

242121103 is a deficient number, since it is larger than the sum of its proper divisors (39530033).

242121103 is an equidigital number, since it uses as much as digits as its factorization.

242121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4941261 (or 4941254 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 242121103 is about 15560.2410971039. The cubic root of 242121103 is about 623.2719008410.

Adding to 242121103 its reverse (301121242), we get a palindrome (543242345).

The spelling of 242121103 in words is "two hundred forty-two million, one hundred twenty-one thousand, one hundred three".