123542700545 has 16 divisors (see below), whose sum is σ = 161743272768. Its totient is φ = 89841099840.

The previous prime is 123542700527. The next prime is 123542700557. The reversal of 123542700545 is 545007245321.

It is not a de Polignac number, because 123542700545 - 2⁸ = 123542700289 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123542700499 and 123542700508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548582 + ... + 740288.

It is an arithmetic number, because the mean of its divisors is an integer number (10108954548).

Almost surely, 2^123542700545 is an apocalyptic number.

It is an amenable number.

123542700545 is a deficient number, since it is larger than the sum of its proper divisors (38200572223).

123542700545 is a wasteful number, since it uses less digits than its factorization.

123542700545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203440.

The product of its (nonzero) digits is 168000, while the sum is 38.

Adding to 123542700545 its reverse (545007245321), we get a palindrome (668549945866).

The spelling of 123542700545 in words is "one hundred twenty-three billion, five hundred forty-two million, seven hundred thousand, five hundred forty-five".