2001422394 has 24 divisors (see below), whose sum is σ = 4337529300. Its totient is φ = 666969408.

The previous prime is 2001422387. The next prime is 2001422417. The reversal of 2001422394 is 4932241002.

2001422394 is a `hidden beast` number, since 200 + 1 + 422 + 39 + 4 = 666.

2001422394 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1731641769 + 269780625 = 41613^2 + 16425^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71724 + ... + 95640.

Almost surely, 2^2001422394 is an apocalyptic number.

2001422394 is an abundant number, since it is smaller than the sum of its proper divisors (2336106906).

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

2001422394 is a wasteful number, since it uses less digits than its factorization.

2001422394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28574 (or 28571 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2001422394 is about 44737.2595718602. The cubic root of 2001422394 is about 1260.2196631388.

Adding to 2001422394 its reverse (4932241002), we get a palindrome (6933663396).

The spelling of 2001422394 in words is "two billion, one million, four hundred twenty-two thousand, three hundred ninety-four".