123102543 has 4 divisors (see below), whose sum is σ = 164136728. Its totient is φ = 82068360.

The previous prime is 123102533. The next prime is 123102557. The reversal of 123102543 is 345201321.

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

It is not a de Polignac number, because 123102543 - 2⁴ = 123102527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123102503) 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, 20517088 + ... + 20517093.

It is an arithmetic number, because the mean of its divisors is an integer number (41034182).

Almost surely, 2^123102543 is an apocalyptic number.

123102543 is a deficient number, since it is larger than the sum of its proper divisors (41034185).

123102543 is an equidigital number, since it uses as much as digits as its factorization.

123102543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41034184.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 123102543 is about 11095.1585387501. The cubic root of 123102543 is about 497.4571470543.

Adding to 123102543 its reverse (345201321), we get a palindrome (468303864).

The spelling of 123102543 in words is "one hundred twenty-three million, one hundred two thousand, five hundred forty-three".