401442200421 has 24 divisors (see below), whose sum is σ = 549086742720. Its totient is φ = 260883118080.

The previous prime is 401442200333. The next prime is 401442200507. The reversal of 401442200421 is 124002244104.

It is not a de Polignac number, because 401442200421 - 2¹⁰ = 401442199397 is a prime.

It is a super-2 number, since 2×401442200421² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401442200391 and 401442200400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401442200021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6135045 + ... + 6200133.

It is an arithmetic number, because the mean of its divisors is an integer number (22878614280).

Almost surely, 2^401442200421 is an apocalyptic number.

401442200421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

401442200421 is a deficient number, since it is larger than the sum of its proper divisors (147644542299).

401442200421 is a wasteful number, since it uses less digits than its factorization.

401442200421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66397 (or 66356 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 401442200421 its reverse (124002244104), we get a palindrome (525444444525).

The spelling of 401442200421 in words is "four hundred one billion, four hundred forty-two million, two hundred thousand, four hundred twenty-one".