1142202314521 has 4 divisors (see below), whose sum is σ = 1153977596212. Its totient is φ = 1130427032832.

The previous prime is 1142202314509. The next prime is 1142202314537. The reversal of 1142202314521 is 1254132022411.

It is a happy number.

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 834776422921 + 307425891600 = 913661^2 + 554460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142202314521 - 2²¹ = 1142200217369 is a prime.

It is a super-2 number, since 2×1142202314521² (a number of 25 digits) contains 22 as substring.

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 1142202314521.

It is not an unprimeable number, because it can be changed into a prime (1142202314321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5887640700 + ... + 5887640893.

It is an arithmetic number, because the mean of its divisors is an integer number (288494399053).

Almost surely, 2^{1142202314521} is an apocalyptic number.

It is an amenable number.

1142202314521 is a deficient number, since it is larger than the sum of its proper divisors (11775281691).

1142202314521 is an equidigital number, since it uses as much as digits as its factorization.

1142202314521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11775281690.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 1142202314521 its reverse (1254132022411), we get a palindrome (2396334336932).

The spelling of 1142202314521 in words is "one trillion, one hundred forty-two billion, two hundred two million, three hundred fourteen thousand, five hundred twenty-one".