123542142001 has 4 divisors (see below), whose sum is σ = 123543284004. Its totient is φ = 123541000000.

The previous prime is 123542141993. The next prime is 123542142013. The reversal of 123542142001 is 100241245321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90933005601 + 32609136400 = 301551^2 + 180580^2 .

It is a cyclic number.

It is not a de Polignac number, because 123542142001 - 2³ = 123542141993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123542143001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389500 + ... + 631501.

It is an arithmetic number, because the mean of its divisors is an integer number (30885821001).

Almost surely, 2^123542142001 is an apocalyptic number.

It is an amenable number.

123542142001 is a deficient number, since it is larger than the sum of its proper divisors (1142003).

123542142001 is a wasteful number, since it uses less digits than its factorization.

123542142001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142002.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 123542142001 its reverse (100241245321), we get a palindrome (223783387322).

The spelling of 123542142001 in words is "one hundred twenty-three billion, five hundred forty-two million, one hundred forty-two thousand, one".