424342121243423 has 4 divisors (see below), whose sum is σ = 446675917098360. Its totient is φ = 402008325388488.

The previous prime is 424342121243377. The next prime is 424342121243429. The reversal of 424342121243423 is 324342121243424.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 424342121243423 - 2²⁴ = 424342104466207 is a prime.

It is a super-2 number, since 2×424342121243423² (a number of 30 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 (424342121243429) 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, 11166897927440 + ... + 11166897927477.

It is an arithmetic number, because the mean of its divisors is an integer number (111668979274590).

Almost surely, 2^{424342121243423} is an apocalyptic number.

424342121243423 is a deficient number, since it is larger than the sum of its proper divisors (22333795854937).

424342121243423 is a wasteful number, since it uses less digits than its factorization.

424342121243423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22333795854936.

The product of its digits is 884736, while the sum is 41.

Adding to 424342121243423 its reverse (324342121243424), we get a palindrome (748684242486847).

Subtracting from 424342121243423 its reverse (324342121243424), we obtain a palindrome (99999999999999).

The spelling of 424342121243423 in words is "four hundred twenty-four trillion, three hundred forty-two billion, one hundred twenty-one million, two hundred forty-three thousand, four hundred twenty-three".