681142422 has 16 divisors (see below), whose sum is σ = 1362885120. Its totient is φ = 226947432.

The previous prime is 681142421. The next prime is 681142499. The reversal of 681142422 is 224241186.

It is a self number, because there is not a number n which added to its sum of digits gives 681142422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681142421) 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 7 ways as a sum of consecutive naturals, for example, 9522 + ... + 38117.

It is an arithmetic number, because the mean of its divisors is an integer number (85180320).

Almost surely, 2^681142422 is an apocalyptic number.

681142422 is an abundant number, since it is smaller than the sum of its proper divisors (681742698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681142422 is a wasteful number, since it uses less digits than its factorization.

681142422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50027.

The product of its digits is 6144, while the sum is 30.

The square root of 681142422 is about 26098.7053701903. The cubic root of 681142422 is about 879.8581133156.

The spelling of 681142422 in words is "six hundred eighty-one million, one hundred forty-two thousand, four hundred twenty-two".