4042121132143 has 4 divisors (see below), whose sum is σ = 4048236293368. Its totient is φ = 4036005970920.

The previous prime is 4042121132141. The next prime is 4042121132149. The reversal of 4042121132143 is 3412311212404.

It is a happy number.

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 4042121132143 - 2¹ = 4042121132141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042121132141) 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, 3057579621 + ... + 3057580942.

It is an arithmetic number, because the mean of its divisors is an integer number (1012059073342).

Almost surely, 2^{4042121132143} is an apocalyptic number.

4042121132143 is a deficient number, since it is larger than the sum of its proper divisors (6115161225).

4042121132143 is an equidigital number, since it uses as much as digits as its factorization.

4042121132143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6115161224.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 4042121132143 its reverse (3412311212404), we get a palindrome (7454432344547).

The spelling of 4042121132143 in words is "four trillion, forty-two billion, one hundred twenty-one million, one hundred thirty-two thousand, one hundred forty-three".