6420222126 has 24 divisors (see below), whose sum is σ = 13920710544. Its totient is φ = 2138500320.

The previous prime is 6420222079. The next prime is 6420222143. The reversal of 6420222126 is 6212220246.

It is a happy number.

6420222126 is a `hidden beast` number, since 6 + 420 + 22 + 212 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 6420222126.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 105855 + ... + 155066.

It is an arithmetic number, because the mean of its divisors is an integer number (580029606).

Almost surely, 2^6420222126 is an apocalyptic number.

6420222126 is an abundant number, since it is smaller than the sum of its proper divisors (7500488418).

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

6420222126 is a wasteful number, since it uses less digits than its factorization.

6420222126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262296 (or 262293 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 6420222126 is about 80126.2886074227. The cubic root of 6420222126 is about 1858.5889523567.

The spelling of 6420222126 in words is "six billion, four hundred twenty million, two hundred twenty-two thousand, one hundred twenty-six".