123563143 has 6 divisors (see below), whose sum is σ = 135817472. Its totient is φ = 112330020.

The previous prime is 123563093. The next prime is 123563147. The reversal of 123563143 is 341365321.

It is a de Polignac number, because none of the positive numbers 2^k-123563143 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 (123563147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 510471 + ... + 510712.

Almost surely, 2^123563143 is an apocalyptic number.

123563143 is a deficient number, since it is larger than the sum of its proper divisors (12254329).

123563143 is a wasteful number, since it uses less digits than its factorization.

123563143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021205 (or 1021194 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

The square root of 123563143 is about 11115.8959602904. The cubic root of 123563143 is about 498.0768027759.

The spelling of 123563143 in words is "one hundred twenty-three million, five hundred sixty-three thousand, one hundred forty-three".