422740138820 has 24 divisors (see below), whose sum is σ = 888228851328. Its totient is φ = 169005663200.

The previous prime is 422740138811. The next prime is 422740138831. The reversal of 422740138820 is 28831047224.

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, 5611166 + ... + 5686005.

It is an arithmetic number, because the mean of its divisors is an integer number (37009535472).

Almost surely, 2^422740138820 is an apocalyptic number.

It is an amenable number.

422740138820 is an abundant number, since it is smaller than the sum of its proper divisors (465488712508).

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

422740138820 is a wasteful number, since it uses less digits than its factorization.

422740138820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11299051 (or 11299049 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The spelling of 422740138820 in words is "four hundred twenty-two billion, seven hundred forty million, one hundred thirty-eight thousand, eight hundred twenty".