422378442 has 16 divisors (see below), whose sum is σ = 938618880. Its totient is φ = 140792796.

The previous prime is 422378423. The next prime is 422378459. The reversal of 422378442 is 244873224.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 422378397 and 422378406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3910858 + ... + 3910965.

It is an arithmetic number, because the mean of its divisors is an integer number (58663680).

Almost surely, 2^422378442 is an apocalyptic number.

422378442 is an abundant number, since it is smaller than the sum of its proper divisors (516240438).

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

422378442 is a wasteful number, since it uses less digits than its factorization.

422378442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7821834 (or 7821828 counting only the distinct ones).

The product of its digits is 86016, while the sum is 36.

The square root of 422378442 is about 20551.8476541648. The cubic root of 422378442 is about 750.2982174061.

The spelling of 422378442 in words is "four hundred twenty-two million, three hundred seventy-eight thousand, four hundred forty-two".