424132123200421 has 4 divisors (see below), whose sum is σ = 433995660949312. Its totient is φ = 414268585451532.

The previous prime is 424132123200347. The next prime is 424132123200431. The reversal of 424132123200421 is 124002321231424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 424132123200421 - 2¹⁵ = 424132123167653 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 (424132123200431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4931768874381 + ... + 4931768874466.

It is an arithmetic number, because the mean of its divisors is an integer number (108498915237328).

Almost surely, 2^{424132123200421} is an apocalyptic number.

It is an amenable number.

424132123200421 is a deficient number, since it is larger than the sum of its proper divisors (9863537748891).

424132123200421 is an equidigital number, since it uses as much as digits as its factorization.

424132123200421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9863537748890.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 424132123200421 its reverse (124002321231424), we get a palindrome (548134444431845).

The spelling of 424132123200421 in words is "four hundred twenty-four trillion, one hundred thirty-two billion, one hundred twenty-three million, two hundred thousand, four hundred twenty-one".