123254532143 has 4 divisors (see below), whose sum is σ = 123264603528. Its totient is φ = 123244460760.

The previous prime is 123254532101. The next prime is 123254532151. The reversal of 123254532143 is 341235452321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341235452321 = 291503 ⋅1170607.

It is a cyclic number.

It is not a de Polignac number, because 123254532143 - 2⁸ = 123254531887 is a prime.

It is a super-3 number, since 3×123254532143³ (a number of 34 digits) contains 333 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 (123254532343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5017313 + ... + 5041818.

It is an arithmetic number, because the mean of its divisors is an integer number (30816150882).

Almost surely, 2^123254532143 is an apocalyptic number.

123254532143 is a deficient number, since it is larger than the sum of its proper divisors (10071385).

123254532143 is a wasteful number, since it uses less digits than its factorization.

123254532143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10071384.

The product of its digits is 86400, while the sum is 35.

Adding to 123254532143 its reverse (341235452321), we get a palindrome (464489984464).

The spelling of 123254532143 in words is "one hundred twenty-three billion, two hundred fifty-four million, five hundred thirty-two thousand, one hundred forty-three".