40123122143 has 4 divisors (see below), whose sum is σ = 43209516168. Its totient is φ = 37036728120.

The previous prime is 40123122121. The next prime is 40123122157. The reversal of 40123122143 is 34122132104.

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

It is a cyclic number.

It is not a de Polignac number, because 40123122143 - 2⁶ = 40123122079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40123122113) 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, 1543196993 + ... + 1543197018.

It is an arithmetic number, because the mean of its divisors is an integer number (10802379042).

Almost surely, 2^40123122143 is an apocalyptic number.

40123122143 is a deficient number, since it is larger than the sum of its proper divisors (3086394025).

40123122143 is a wasteful number, since it uses less digits than its factorization.

40123122143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086394024.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 40123122143 its reverse (34122132104), we get a palindrome (74245254247).

The spelling of 40123122143 in words is "forty billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred forty-three".