423513511421 has 24 divisors (see below), whose sum is σ = 571757903424. Its totient is φ = 304625093760.

The previous prime is 423513511417. The next prime is 423513511469. The reversal of 423513511421 is 124115315324.

It is not a de Polignac number, because 423513511421 - 2² = 423513511417 is a prime.

It is a super-2 number, since 2×423513511421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423513511411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16259696 + ... + 16285721.

It is an arithmetic number, because the mean of its divisors is an integer number (23823245976).

Almost surely, 2^423513511421 is an apocalyptic number.

It is an amenable number.

423513511421 is a deficient number, since it is larger than the sum of its proper divisors (148244392003).

423513511421 is a wasteful number, since it uses less digits than its factorization.

423513511421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32545461 (or 32545448 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

Adding to 423513511421 its reverse (124115315324), we get a palindrome (547628826745).

The spelling of 423513511421 in words is "four hundred twenty-three billion, five hundred thirteen million, five hundred eleven thousand, four hundred twenty-one".