401421012403 has 4 divisors (see below), whose sum is σ = 401422307760. Its totient is φ = 401419717048.

The previous prime is 401421012367. The next prime is 401421012413. The reversal of 401421012403 is 304210124104.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 401421012403 - 2¹³ = 401421004211 is a prime.

It is a super-2 number, since 2×401421012403² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401421012413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122226 + ... + 904312.

It is an arithmetic number, because the mean of its divisors is an integer number (100355576940).

Almost surely, 2^401421012403 is an apocalyptic number.

401421012403 is a deficient number, since it is larger than the sum of its proper divisors (1295357).

401421012403 is an equidigital number, since it uses as much as digits as its factorization.

401421012403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295356.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 401421012403 its reverse (304210124104), we get a palindrome (705631136507).

The spelling of 401421012403 in words is "four hundred one billion, four hundred twenty-one million, twelve thousand, four hundred three".