842504047 has 16 divisors (see below), whose sum is σ = 1057365504. Its totient is φ = 652140000.

The previous prime is 842504017. The next prime is 842504057. The reversal of 842504047 is 740405248.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 842504047 - 2¹¹ = 842501999 is a prime.

It is a super-2 number, since 2×842504047² = 1419626138422756418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842504017) 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 in 15 ways as a sum of consecutive naturals, for example, 24604 + ... + 47857.

It is an arithmetic number, because the mean of its divisors is an integer number (66085344).

Almost surely, 2^842504047 is an apocalyptic number.

842504047 is a deficient number, since it is larger than the sum of its proper divisors (214861457).

842504047 is a wasteful number, since it uses less digits than its factorization.

842504047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72630.

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 842504047 is about 29025.9202610357. The cubic root of 842504047 is about 944.4754316441.

The spelling of 842504047 in words is "eight hundred forty-two million, five hundred four thousand, forty-seven".