1142503321 has 2 divisors, whose sum is σ = 1142503322. Its totient is φ = 1142503320.

The previous prime is 1142503319. The next prime is 1142503333. The reversal of 1142503321 is 1233052411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 830592400 + 311910921 = 28820^2 + 17661^2 .

It is an emirp because it is prime and its reverse (1233052411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1142503321 - 2¹ = 1142503319 is a prime.

Together with 1142503319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1142503292 and 1142503301.

It is not a weakly prime, because it can be changed into another prime (1142503381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571251660 + 571251661.

It is an arithmetic number, because the mean of its divisors is an integer number (571251661).

Almost surely, 2^1142503321 is an apocalyptic number.

It is an amenable number.

1142503321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142503321 is an equidigital number, since it uses as much as digits as its factorization.

1142503321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1142503321 is about 33800.9366882044. The cubic root of 1142503321 is about 1045.4080108178.

Adding to 1142503321 its reverse (1233052411), we get a palindrome (2375555732).

The spelling of 1142503321 in words is "one billion, one hundred forty-two million, five hundred three thousand, three hundred twenty-one".