842009487073 has 2 divisors, whose sum is σ = 842009487074. Its totient is φ = 842009487072.

The previous prime is 842009487041. The next prime is 842009487107. The reversal of 842009487073 is 370784900248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672938027584 + 169071459489 = 820328^2 + 411183^2 .

It is a cyclic number.

It is not a de Polignac number, because 842009487073 - 2⁵ = 842009487041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 842009487073.

It is not a weakly prime, because it can be changed into another prime (842009487673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421004743536 + 421004743537.

It is an arithmetic number, because the mean of its divisors is an integer number (421004743537).

Almost surely, 2^842009487073 is an apocalyptic number.

It is an amenable number.

842009487073 is a deficient number, since it is larger than the sum of its proper divisors (1).

842009487073 is an equidigital number, since it uses as much as digits as its factorization.

842009487073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 842009487073 in words is "eight hundred forty-two billion, nine million, four hundred eighty-seven thousand, seventy-three".