423140013521 has 16 divisors (see below), whose sum is σ = 440543880000. Its totient is φ = 405930923328.

The previous prime is 423140013427. The next prime is 423140013529. The reversal of 423140013521 is 125310041324.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423140013521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423140013529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3220511 + ... + 3349323.

It is an arithmetic number, because the mean of its divisors is an integer number (27533992500).

Almost surely, 2^423140013521 is an apocalyptic number.

It is an amenable number.

423140013521 is a deficient number, since it is larger than the sum of its proper divisors (17403866479).

423140013521 is a wasteful number, since it uses less digits than its factorization.

423140013521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129568.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 423140013521 its reverse (125310041324), we get a palindrome (548450054845).

The spelling of 423140013521 in words is "four hundred twenty-three billion, one hundred forty million, thirteen thousand, five hundred twenty-one".