123454143 has 6 divisors (see below), whose sum is σ = 178322664. Its totient is φ = 82302756.

The previous prime is 123454141. The next prime is 123454147. The reversal of 123454143 is 341454321.

It is a happy number.

It is not a de Polignac number, because 123454143 - 2¹ = 123454141 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123454141) 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, 6858555 + ... + 6858572.

It is an arithmetic number, because the mean of its divisors is an integer number (29720444).

Almost surely, 2^123454143 is an apocalyptic number.

123454143 is a deficient number, since it is larger than the sum of its proper divisors (54868521).

123454143 is a wasteful number, since it uses less digits than its factorization.

123454143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13717133 (or 13717130 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 123454143 is about 11110.9919899170. The cubic root of 123454143 is about 497.9303018537.

The spelling of 123454143 in words is "one hundred twenty-three million, four hundred fifty-four thousand, one hundred forty-three".