422240401 has 12 divisors (see below), whose sum is σ = 486149904. Its totient is φ = 363648600.

The previous prime is 422240393. The next prime is 422240419. The reversal of 422240401 is 104042224.

It is not a de Polignac number, because 422240401 - 2³ = 422240393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422240431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49195 + ... + 57136.

It is an arithmetic number, because the mean of its divisors is an integer number (40512492).

Almost surely, 2^422240401 is an apocalyptic number.

It is an amenable number.

422240401 is a deficient number, since it is larger than the sum of its proper divisors (63909503).

422240401 is a wasteful number, since it uses less digits than its factorization.

422240401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106380 (or 106361 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 422240401 is about 20548.4890198769. The cubic root of 422240401 is about 750.2164714401.

Adding to 422240401 its reverse (104042224), we get a palindrome (526282625).

The spelling of 422240401 in words is "four hundred twenty-two million, two hundred forty thousand, four hundred one".