123542143 has 8 divisors (see below), whose sum is σ = 127090656. Its totient is φ = 120019200.

The previous prime is 123542129. The next prime is 123542147. The reversal of 123542143 is 341245321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123542143 is a prime.

It is a super-2 number, since 2×123542143² = 30525322194064898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123542147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3630 + ... + 16132.

It is an arithmetic number, because the mean of its divisors is an integer number (15886332).

Almost surely, 2^123542143 is an apocalyptic number.

123542143 is a deficient number, since it is larger than the sum of its proper divisors (3548513).

123542143 is a wasteful number, since it uses less digits than its factorization.

123542143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12785.

The product of its digits is 2880, while the sum is 25.

The square root of 123542143 is about 11114.9513269290. The cubic root of 123542143 is about 498.0485845300.

Adding to 123542143 its reverse (341245321), we get a palindrome (464787464).

The spelling of 123542143 in words is "one hundred twenty-three million, five hundred forty-two thousand, one hundred forty-three".