842008390547 has 2 divisors, whose sum is σ = 842008390548. Its totient is φ = 842008390546.

The previous prime is 842008390519. The next prime is 842008390583. The reversal of 842008390547 is 745093800248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 842008390547 - 2¹² = 842008386451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 842008390495 and 842008390504.

It is not a weakly prime, because it can be changed into another prime (842008390747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421004195273 + 421004195274.

It is an arithmetic number, because the mean of its divisors is an integer number (421004195274).

Almost surely, 2^842008390547 is an apocalyptic number.

842008390547 is a deficient number, since it is larger than the sum of its proper divisors (1).

842008390547 is an equidigital number, since it uses as much as digits as its factorization.

842008390547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 842008390547 in words is "eight hundred forty-two billion, eight million, three hundred ninety thousand, five hundred forty-seven".