4121003345405 has 4 divisors (see below), whose sum is σ = 4945204014492. Its totient is φ = 3296802676320.

The previous prime is 4121003345359. The next prime is 4121003345509. The reversal of 4121003345405 is 5045433001214.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1214240909476 + 2906762435929 = 1101926^2 + 1704923^2 .

It is not a de Polignac number, because 4121003345405 - 2¹⁴ = 4121003329021 is a prime.

It is a super-2 number, since 2×4121003345405² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412100334536 + ... + 412100334545.

It is an arithmetic number, because the mean of its divisors is an integer number (1236301003623).

Almost surely, 2^{4121003345405} is an apocalyptic number.

It is an amenable number.

4121003345405 is a deficient number, since it is larger than the sum of its proper divisors (824200669087).

4121003345405 is an equidigital number, since it uses as much as digits as its factorization.

4121003345405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824200669086.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 4121003345405 its reverse (5045433001214), we get a palindrome (9166436346619).

The spelling of 4121003345405 in words is "four trillion, one hundred twenty-one billion, three million, three hundred forty-five thousand, four hundred five".