1142355509 has 2 divisors, whose sum is σ = 1142355510. Its totient is φ = 1142355508.

The previous prime is 1142355497. The next prime is 1142355527. The reversal of 1142355509 is 9055532411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 809402500 + 332953009 = 28450^2 + 18247^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142355509 is a prime.

It is a super-2 number, since 2×1142355509² = 2609952217885298162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142355569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571177754 + 571177755.

It is an arithmetic number, because the mean of its divisors is an integer number (571177755).

Almost surely, 2^1142355509 is an apocalyptic number.

It is an amenable number.

1142355509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142355509 is an equidigital number, since it uses as much as digits as its factorization.

1142355509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1142355509 is about 33798.7501100263. The cubic root of 1142355509 is about 1045.3629254599.

The spelling of 1142355509 in words is "one billion, one hundred forty-two million, three hundred fifty-five thousand, five hundred nine".