1142505321 has 16 divisors (see below), whose sum is σ = 1612799040. Its totient is φ = 717405120.

The previous prime is 1142505319. The next prime is 1142505337. The reversal of 1142505321 is 1235052411.

It is a happy number.

It is not a de Polignac number, because 1142505321 - 2¹ = 1142505319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142505291 and 1142505300.

It is not an unprimeable number, because it can be changed into a prime (1142505311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48070 + ... + 67791.

It is an arithmetic number, because the mean of its divisors is an integer number (100799940).

Almost surely, 2^1142505321 is an apocalyptic number.

It is an amenable number.

1142505321 is a deficient number, since it is larger than the sum of its proper divisors (470293719).

1142505321 is a wasteful number, since it uses less digits than its factorization.

1142505321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116056.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1142505321 is about 33800.9662731704. The cubic root of 1142505321 is about 1045.4086208276.

Adding to 1142505321 its reverse (1235052411), we get a palindrome (2377557732).

The spelling of 1142505321 in words is "one billion, one hundred forty-two million, five hundred five thousand, three hundred twenty-one".