1142304234521 has 4 divisors (see below), whose sum is σ = 1142316194100. Its totient is φ = 1142292274944.

The previous prime is 1142304234517. The next prime is 1142304234559. The reversal of 1142304234521 is 1254324032411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 762399654025 + 379904580496 = 873155^2 + 616364^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142304234521 - 2² = 1142304234517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142304234571) 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, 5835356 + ... + 6027933.

It is an arithmetic number, because the mean of its divisors is an integer number (285579048525).

Almost surely, 2^{1142304234521} is an apocalyptic number.

It is an amenable number.

1142304234521 is a deficient number, since it is larger than the sum of its proper divisors (11959579).

1142304234521 is an equidigital number, since it uses as much as digits as its factorization.

1142304234521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11959578.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 1142304234521 its reverse (1254324032411), we get a palindrome (2396628266932).

The spelling of 1142304234521 in words is "one trillion, one hundred forty-two billion, three hundred four million, two hundred thirty-four thousand, five hundred twenty-one".