421313134003423 has 4 divisors (see below), whose sum is σ = 423666838662840. Its totient is φ = 418959429344008.

The previous prime is 421313134003403. The next prime is 421313134003439. The reversal of 421313134003423 is 324300431313124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421313134003423 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 (421313134003403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176852329440 + ... + 1176852329797.

It is an arithmetic number, because the mean of its divisors is an integer number (105916709665710).

Almost surely, 2^{421313134003423} is an apocalyptic number.

421313134003423 is a deficient number, since it is larger than the sum of its proper divisors (2353704659417).

421313134003423 is a wasteful number, since it uses less digits than its factorization.

421313134003423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353704659416.

The product of its (nonzero) digits is 62208, while the sum is 34.

Adding to 421313134003423 its reverse (324300431313124), we get a palindrome (745613565316547).

The spelling of 421313134003423 in words is "four hundred twenty-one trillion, three hundred thirteen billion, one hundred thirty-four million, three thousand, four hundred twenty-three".