123042503355 has 64 divisors (see below), whose sum is σ = 211589065728. Its totient is φ = 60833669120.

The previous prime is 123042503327. The next prime is 123042503369. The reversal of 123042503355 is 553305240321.

It is not a de Polignac number, because 123042503355 - 2⁸ = 123042503099 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23226067 + ... + 23231363.

It is an arithmetic number, because the mean of its divisors is an integer number (3306079152).

Almost surely, 2^123042503355 is an apocalyptic number.

123042503355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123042503355 is a deficient number, since it is larger than the sum of its proper divisors (88546562373).

123042503355 is a wasteful number, since it uses less digits than its factorization.

123042503355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6676.

The product of its (nonzero) digits is 54000, while the sum is 33.

Adding to 123042503355 its reverse (553305240321), we get a palindrome (676347743676).

The spelling of 123042503355 in words is "one hundred twenty-three billion, forty-two million, five hundred three thousand, three hundred fifty-five".