1142565449 has 2 divisors, whose sum is σ = 1142565450. Its totient is φ = 1142565448.

The previous prime is 1142565421. The next prime is 1142565451. The reversal of 1142565449 is 9445652411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 793436224 + 349129225 = 28168^2 + 18685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142565449 - 2¹⁶ = 1142499913 is a prime.

Together with 1142565451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1142565049) 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 as a sum of consecutive naturals, namely, 571282724 + 571282725.

It is an arithmetic number, because the mean of its divisors is an integer number (571282725).

Almost surely, 2^1142565449 is an apocalyptic number.

It is an amenable number.

1142565449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142565449 is an equidigital number, since it uses as much as digits as its factorization.

1142565449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The square root of 1142565449 is about 33801.8557034965. The cubic root of 1142565449 is about 1045.4269598310.

The spelling of 1142565449 in words is "one billion, one hundred forty-two million, five hundred sixty-five thousand, four hundred forty-nine".