840078027 has 32 divisors (see below), whose sum is σ = 1315968000. Its totient is φ = 528184800.

The previous prime is 840078017. The next prime is 840078067. The reversal of 840078027 is 720870048.

It is not a de Polignac number, because 840078027 - 2¹² = 840073931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 840077982 and 840078000.

It is not an unprimeable number, because it can be changed into a prime (840078017) 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 in 31 ways as a sum of consecutive naturals, for example, 113902 + ... + 121052.

It is an arithmetic number, because the mean of its divisors is an integer number (41124000).

Almost surely, 2^840078027 is an apocalyptic number.

840078027 is a deficient number, since it is larger than the sum of its proper divisors (475889973).

840078027 is a wasteful number, since it uses less digits than its factorization.

840078027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408 (or 7402 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 840078027 is about 28984.0995547559. The cubic root of 840078027 is about 943.5680100404.

The spelling of 840078027 in words is "eight hundred forty million, seventy-eight thousand, twenty-seven".