1231421410405 has 8 divisors (see below), whose sum is σ = 1495509376032. Its totient is φ = 973268005968.

The previous prime is 1231421410403. The next prime is 1231421410421. The reversal of 1231421410405 is 5040141241321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231421410405 - 2¹ = 1231421410403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231421410403) 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 7 ways as a sum of consecutive naturals, for example, 1483639839 + ... + 1483640668.

It is an arithmetic number, because the mean of its divisors is an integer number (186938672004).

Almost surely, 2^{1231421410405} is an apocalyptic number.

It is an amenable number.

1231421410405 is a deficient number, since it is larger than the sum of its proper divisors (264087965627).

1231421410405 is an equidigital number, since it uses as much as digits as its factorization.

1231421410405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967280595.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 1231421410405 its reverse (5040141241321), we get a palindrome (6271562651726).

The spelling of 1231421410405 in words is "one trillion, two hundred thirty-one billion, four hundred twenty-one million, four hundred ten thousand, four hundred five".