840078022 has 16 divisors (see below), whose sum is σ = 1443470112. Its totient is φ = 359199360.

The previous prime is 840078017. The next prime is 840078067. The reversal of 840078022 is 220870048.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63229 + ... + 75352.

It is an arithmetic number, because the mean of its divisors is an integer number (90216882).

Almost surely, 2^840078022 is an apocalyptic number.

840078022 is a deficient number, since it is larger than the sum of its proper divisors (603392090).

840078022 is a wasteful number, since it uses less digits than its factorization.

840078022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139023.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 840078022 is about 28984.0994685017. The cubic root of 840078022 is about 943.5680081684.

It can be divided in two parts, 84007 and 8022, that added together give a palindrome (92029).

The spelling of 840078022 in words is "eight hundred forty million, seventy-eight thousand, twenty-two".