123012345525043 has 4 divisors (see below), whose sum is σ = 132474833642368. Its totient is φ = 113549857407720.

The previous prime is 123012345524977. The next prime is 123012345525049. The reversal of 123012345525043 is 340525543210321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123012345525043 - 2³³ = 123003755590451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123012345524987 and 123012345525005.

It is not an unprimeable number, because it can be changed into a prime (123012345525049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4731244058643 + ... + 4731244058668.

It is an arithmetic number, because the mean of its divisors is an integer number (33118708410592).

Almost surely, 2^{123012345525043} is an apocalyptic number.

123012345525043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123012345525043 is a deficient number, since it is larger than the sum of its proper divisors (9462488117325).

123012345525043 is an equidigital number, since it uses as much as digits as its factorization.

123012345525043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9462488117324.

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 123012345525043 its reverse (340525543210321), we get a palindrome (463537888735364).

The spelling of 123012345525043 in words is "one hundred twenty-three trillion, twelve billion, three hundred forty-five million, five hundred twenty-five thousand, forty-three".