242123052505 has 16 divisors (see below), whose sum is σ = 297660633984. Its totient is φ = 188957301120.

The previous prime is 242123052467. The next prime is 242123052527. The reversal of 242123052505 is 505250321242.

It is not a de Polignac number, because 242123052505 - 2¹⁷ = 242122921433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2582662 + ... + 2674768.

It is an arithmetic number, because the mean of its divisors is an integer number (18603789624).

Almost surely, 2^242123052505 is an apocalyptic number.

It is an amenable number.

242123052505 is a deficient number, since it is larger than the sum of its proper divisors (55537581479).

242123052505 is a wasteful number, since it uses less digits than its factorization.

242123052505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104976.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 242123052505 its reverse (505250321242), we get a palindrome (747373373747).

The spelling of 242123052505 in words is "two hundred forty-two billion, one hundred twenty-three million, fifty-two thousand, five hundred five".