1142355209 has 2 divisors, whose sum is σ = 1142355210. Its totient is φ = 1142355208.

The previous prime is 1142355169. The next prime is 1142355223. The reversal of 1142355209 is 9025532411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 978438400 + 163916809 = 31280^2 + 12803^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142355209 - 2¹² = 1142351113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1142355509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571177604 + 571177605.

It is an arithmetic number, because the mean of its divisors is an integer number (571177605).

Almost surely, 2^1142355209 is an apocalyptic number.

It is an amenable number.

1142355209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142355209 is an equidigital number, since it uses as much as digits as its factorization.

1142355209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1142355209 is about 33798.7456719920. The cubic root of 1142355209 is about 1045.3628339505.

The spelling of 1142355209 in words is "one billion, one hundred forty-two million, three hundred fifty-five thousand, two hundred nine".