123142543001 has 16 divisors (see below), whose sum is σ = 125635485696. Its totient is φ = 120669783696.

The previous prime is 123142542917. The next prime is 123142543033. The reversal of 123142543001 is 100345241321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123142543001 - 2³⁰ = 122068801177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123142543801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23829920 + ... + 23835086.

It is an arithmetic number, because the mean of its divisors is an integer number (7852217856).

Almost surely, 2^123142543001 is an apocalyptic number.

It is an amenable number.

123142543001 is a deficient number, since it is larger than the sum of its proper divisors (2492942695).

123142543001 is a wasteful number, since it uses less digits than its factorization.

123142543001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7028.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 123142543001 its reverse (100345241321), we get a palindrome (223487784322).

The spelling of 123142543001 in words is "one hundred twenty-three billion, one hundred forty-two million, five hundred forty-three thousand, one".