123553112030242 has 8 divisors (see below), whose sum is σ = 196231413224556. Its totient is φ = 58142640955392.

The previous prime is 123553112030239. The next prime is 123553112030251. The reversal of 123553112030242 is 242030211355321.

It can be written as a sum of positive squares in 2 ways, for example, as 111109919275161 + 12443192755081 = 10540869^2 + 3527491^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 3633915059713 = 123553112030242 / (1 + 2 + 3 + 5 + 5 + 3 + 1 + 1 + 2 + 0 + 3 + 0 + 2 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 123553112030198 and 123553112030207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1816957529823 + ... + 1816957529890.

Almost surely, 2^{123553112030242} is an apocalyptic number.

123553112030242 is a deficient number, since it is larger than the sum of its proper divisors (72678301194314).

123553112030242 is a wasteful number, since it uses less digits than its factorization.

123553112030242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633915059732.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 123553112030242 its reverse (242030211355321), we get a palindrome (365583323385563).

The spelling of 123553112030242 in words is "one hundred twenty-three trillion, five hundred fifty-three billion, one hundred twelve million, thirty thousand, two hundred forty-two".