422012378 has 8 divisors (see below), whose sum is σ = 634843872. Its totient is φ = 210397756.

The previous prime is 422012377. The next prime is 422012407. The reversal of 422012378 is 873210224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 422012378.

It is not an unprimeable number, because it can be changed into a prime (422012377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303350 + ... + 304737.

It is an arithmetic number, because the mean of its divisors is an integer number (79355484).

Almost surely, 2^422012378 is an apocalyptic number.

422012378 is a deficient number, since it is larger than the sum of its proper divisors (212831494).

422012378 is a wasteful number, since it uses less digits than its factorization.

422012378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608436.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 422012378 is about 20542.9398577711. The cubic root of 422012378 is about 750.0814003502.

The spelling of 422012378 in words is "four hundred twenty-two million, twelve thousand, three hundred seventy-eight".