1142004321 has 6 divisors (see below), whose sum is σ = 1649561810. Its totient is φ = 761336208.

The previous prime is 1142004317. The next prime is 1142004343. The reversal of 1142004321 is 1234002411.

It can be written as a sum of positive squares in only one way, i.e., 702515025 + 439489296 = 26505^2 + 20964^2 .

It is not a de Polignac number, because 1142004321 - 2² = 1142004317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142004294 and 1142004303.

It is not an unprimeable number, because it can be changed into a prime (1142008321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63444676 + ... + 63444693.

Almost surely, 2^1142004321 is an apocalyptic number.

It is an amenable number.

1142004321 is a deficient number, since it is larger than the sum of its proper divisors (507557489).

1142004321 is a wasteful number, since it uses less digits than its factorization.

1142004321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126889375 (or 126889372 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1142004321 is about 33793.5544298021. The cubic root of 1142004321 is about 1045.2557911107.

Adding to 1142004321 its reverse (1234002411), we get a palindrome (2376006732).

The spelling of 1142004321 in words is "one billion, one hundred forty-two million, four thousand, three hundred twenty-one".