1142505311 has 2 divisors, whose sum is σ = 1142505312. Its totient is φ = 1142505310.

The previous prime is 1142505293. The next prime is 1142505319. The reversal of 1142505311 is 1135052411.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142505311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142505319) 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 as a sum of consecutive naturals, namely, 571252655 + 571252656.

It is an arithmetic number, because the mean of its divisors is an integer number (571252656).

Almost surely, 2^1142505311 is an apocalyptic number.

1142505311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142505311 is an equidigital number, since it uses as much as digits as its factorization.

1142505311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1142505311 is about 33800.9661252456. The cubic root of 1142505311 is about 1045.4086177775.

Adding to 1142505311 its reverse (1135052411), we get a palindrome (2277557722).

Subtracting from 1142505311 its reverse (1135052411), we obtain a square (7452900 = 2730²).

The spelling of 1142505311 in words is "one billion, one hundred forty-two million, five hundred five thousand, three hundred eleven".