401020422 has 64 divisors (see below), whose sum is σ = 926208000. Its totient is φ = 114475680.

The previous prime is 401020391. The next prime is 401020423. The reversal of 401020422 is 224020104.

It is a super-2 number, since 2×401020422² = 321634757722116168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401020423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248743 + ... + 250349.

It is an arithmetic number, because the mean of its divisors is an integer number (14472000).

Almost surely, 2^401020422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401020422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463104000).

401020422 is an abundant number, since it is smaller than the sum of its proper divisors (525187578).

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

401020422 is a wasteful number, since it uses less digits than its factorization.

401020422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 401020422 is about 20025.4943010154. The cubic root of 401020422 is about 737.4323121637.

Adding to 401020422 its reverse (224020104), we get a palindrome (625040526).

The spelling of 401020422 in words is "four hundred one million, twenty thousand, four hundred twenty-two".