401220422 has 4 divisors (see below), whose sum is σ = 601830636. Its totient is φ = 200610210.

The previous prime is 401220419. The next prime is 401220427. The reversal of 401220422 is 224022104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 401220422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401220427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100305104 + ... + 100305107.

It is an arithmetic number, because the mean of its divisors is an integer number (150457659).

Almost surely, 2^401220422 is an apocalyptic number.

401220422 is a deficient number, since it is larger than the sum of its proper divisors (200610214).

401220422 is a wasteful number, since it uses less digits than its factorization.

401220422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200610213.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 401220422 is about 20030.4873130935. The cubic root of 401220422 is about 737.5548844340.

Adding to 401220422 its reverse (224022104), we get a palindrome (625242526).

The spelling of 401220422 in words is "four hundred one million, two hundred twenty thousand, four hundred twenty-two".