441240402421 has 32 divisors (see below), whose sum is σ = 544067363840. Its totient is φ = 348469744896.

The previous prime is 441240402391. The next prime is 441240402437. The reversal of 441240402421 is 124204042144.

It is a happy number.

It is not a de Polignac number, because 441240402421 - 2²¹ = 441238305269 is a prime.

It is a super-2 number, since 2×441240402421² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 441240402421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441240402461) 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, 172560475 + ... + 172563031.

It is an arithmetic number, because the mean of its divisors is an integer number (17002105120).

Almost surely, 2^441240402421 is an apocalyptic number.

It is an amenable number.

441240402421 is a deficient number, since it is larger than the sum of its proper divisors (102826961419).

441240402421 is a wasteful number, since it uses less digits than its factorization.

441240402421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5333.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 441240402421 its reverse (124204042144), we get a palindrome (565444444565).

The spelling of 441240402421 in words is "four hundred forty-one billion, two hundred forty million, four hundred two thousand, four hundred twenty-one".