1111421342143 has 12 divisors (see below), whose sum is σ = 1337459885640. Its totient is φ = 919796971632.

The previous prime is 1111421342131. The next prime is 1111421342149. The reversal of 1111421342143 is 3412431241111.

It is not a de Polignac number, because 1111421342143 - 2¹³ = 1111421333951 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 (1111421342149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 391068721 + ... + 391071562.

It is an arithmetic number, because the mean of its divisors is an integer number (111454990470).

Almost surely, 2^{1111421342143} is an apocalyptic number.

1111421342143 is a deficient number, since it is larger than the sum of its proper divisors (226038543497).

1111421342143 is an equidigital number, since it uses as much as digits as its factorization.

1111421342143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782140326 (or 782140319 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

Adding to 1111421342143 its reverse (3412431241111), we get a palindrome (4523852583254).

The spelling of 1111421342143 in words is "one trillion, one hundred eleven billion, four hundred twenty-one million, three hundred forty-two thousand, one hundred forty-three".