401324420 has 24 divisors (see below), whose sum is σ = 963178944. Its totient is φ = 137596896.

The previous prime is 401324387. The next prime is 401324449. The reversal of 401324420 is 24423104.

It is a super-2 number, since 2×401324420² = 322122580176672800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 401324392 and 401324401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1433162 + ... + 1433441.

It is an arithmetic number, because the mean of its divisors is an integer number (40132456).

Almost surely, 2^401324420 is an apocalyptic number.

It is an amenable number.

401324420 is an abundant number, since it is smaller than the sum of its proper divisors (561854524).

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

401324420 is a wasteful number, since it uses less digits than its factorization.

401324420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866619 (or 2866617 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 401324420 is about 20033.0831376501. The cubic root of 401324420 is about 737.6186046921.

Adding to 401324420 its reverse (24423104), we get a palindrome (425747524).

The spelling of 401324420 in words is "four hundred one million, three hundred twenty-four thousand, four hundred twenty".