424143134021 has 4 divisors (see below), whose sum is σ = 442584139872. Its totient is φ = 405702128172.

The previous prime is 424143133987. The next prime is 424143134027. The reversal of 424143134021 is 120431341424.

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 not a de Polignac number, because 424143134021 - 2¹⁴ = 424143117637 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 (424143134027) 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, 9220502891 + ... + 9220502936.

It is an arithmetic number, because the mean of its divisors is an integer number (110646034968).

Almost surely, 2^424143134021 is an apocalyptic number.

It is an amenable number.

424143134021 is a deficient number, since it is larger than the sum of its proper divisors (18441005851).

424143134021 is a wasteful number, since it uses less digits than its factorization.

424143134021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18441005850.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 424143134021 its reverse (120431341424), we get a palindrome (544574475445).

The spelling of 424143134021 in words is "four hundred twenty-four billion, one hundred forty-three million, one hundred thirty-four thousand, twenty-one".