842281537 has 2 divisors, whose sum is σ = 842281538. Its totient is φ = 842281536.

The previous prime is 842281523. The next prime is 842281553. The reversal of 842281537 is 735182248.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 571975056 + 270306481 = 23916^2 + 16441^2 .

It is a cyclic number.

It is not a de Polignac number, because 842281537 - 2¹⁹ = 841757249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 842281537.

It is not a weakly prime, because it can be changed into another prime (842282537) 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, 421140768 + 421140769.

It is an arithmetic number, because the mean of its divisors is an integer number (421140769).

Almost surely, 2^842281537 is an apocalyptic number.

It is an amenable number.

842281537 is a deficient number, since it is larger than the sum of its proper divisors (1).

842281537 is an equidigital number, since it uses as much as digits as its factorization.

842281537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 40.

The square root of 842281537 is about 29022.0870545176. The cubic root of 842281537 is about 944.3922772534.

The spelling of 842281537 in words is "eight hundred forty-two million, two hundred eighty-one thousand, five hundred thirty-seven".