20430125420543 has 8 divisors (see below), whose sum is σ = 21134845425600. Its totient is φ = 19725420943648.

The previous prime is 20430125420491. The next prime is 20430125420557. The reversal of 20430125420543 is 34502452103402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20430125420543 - 2³⁴ = 20412945551359 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 (20430125420443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1173248 + ... + 6498981.

It is an arithmetic number, because the mean of its divisors is an integer number (2641855678200).

Almost surely, 2^{20430125420543} is an apocalyptic number.

20430125420543 is a deficient number, since it is larger than the sum of its proper divisors (704720005057).

20430125420543 is an equidigital number, since it uses as much as digits as its factorization.

20430125420543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7764081.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 20430125420543 its reverse (34502452103402), we get a palindrome (54932577523945).

The spelling of 20430125420543 in words is "twenty trillion, four hundred thirty billion, one hundred twenty-five million, four hundred twenty thousand, five hundred forty-three".