1131042342021 has 8 divisors (see below), whose sum is σ = 1511204801280. Its totient is φ = 752454055392.

The previous prime is 1131042342013. The next prime is 1131042342091. The reversal of 1131042342021 is 1202432401311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1131042342021 - 2³ = 1131042342013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131042341982 and 1131042342000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131042342011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393541480 + ... + 393544353.

It is an arithmetic number, because the mean of its divisors is an integer number (188900600160).

Almost surely, 2^{1131042342021} is an apocalyptic number.

It is an amenable number.

1131042342021 is a deficient number, since it is larger than the sum of its proper divisors (380162459259).

1131042342021 is an equidigital number, since it uses as much as digits as its factorization.

1131042342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787086315.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1131042342021 its reverse (1202432401311), we get a palindrome (2333474743332).

The spelling of 1131042342021 in words is "one trillion, one hundred thirty-one billion, forty-two million, three hundred forty-two thousand, twenty-one".