123102443 has 4 divisors (see below), whose sum is σ = 123438240. Its totient is φ = 122766648.

The previous prime is 123102439. The next prime is 123102449. The reversal of 123102443 is 344201321.

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 123102443 - 2² = 123102439 is a prime.

It is a super-2 number, since 2×123102443² = 30308422945136498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123102449) 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, 167348 + ... + 168081.

It is an arithmetic number, because the mean of its divisors is an integer number (30859560).

Almost surely, 2^123102443 is an apocalyptic number.

123102443 is a deficient number, since it is larger than the sum of its proper divisors (335797).

123102443 is an equidigital number, since it uses as much as digits as its factorization.

123102443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335796.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 123102443 is about 11095.1540322791. The cubic root of 123102443 is about 497.4570123543.

Adding to 123102443 its reverse (344201321), we get a palindrome (467303764).

The spelling of 123102443 in words is "one hundred twenty-three million, one hundred two thousand, four hundred forty-three".