1142321513 has 4 divisors (see below), whose sum is σ = 1181711940. Its totient is φ = 1102931088.

The previous prime is 1142321507. The next prime is 1142321533. The reversal of 1142321513 is 3151232411.

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 517471504 + 624850009 = 22748^2 + 24997^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142321513 - 2²² = 1138127209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142321503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19695170 + ... + 19695227.

It is an arithmetic number, because the mean of its divisors is an integer number (295427985).

Almost surely, 2^1142321513 is an apocalyptic number.

It is an amenable number.

1142321513 is a deficient number, since it is larger than the sum of its proper divisors (39390427).

1142321513 is an equidigital number, since it uses as much as digits as its factorization.

1142321513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39390426.

The product of its digits is 720, while the sum is 23.

The square root of 1142321513 is about 33798.2471882789. The cubic root of 1142321513 is about 1045.3525555093.

Adding to 1142321513 its reverse (3151232411), we get a palindrome (4293553924).

The spelling of 1142321513 in words is "one billion, one hundred forty-two million, three hundred twenty-one thousand, five hundred thirteen".