1140212343421 has 4 divisors (see below), whose sum is σ = 1140215997312. Its totient is φ = 1140208689532.

The previous prime is 1140212343313. The next prime is 1140212343427. The reversal of 1140212343421 is 1243432120411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140212343421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1140212343421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140212343427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1310131 + ... + 1999216.

It is an arithmetic number, because the mean of its divisors is an integer number (285053999328).

Almost surely, 2^{1140212343421} is an apocalyptic number.

It is an amenable number.

1140212343421 is a deficient number, since it is larger than the sum of its proper divisors (3653891).

1140212343421 is an equidigital number, since it uses as much as digits as its factorization.

1140212343421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3653890.

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

Adding to 1140212343421 its reverse (1243432120411), we get a palindrome (2383644463832).

The spelling of 1140212343421 in words is "one trillion, one hundred forty billion, two hundred twelve million, three hundred forty-three thousand, four hundred twenty-one".