500430105421 has 2 divisors, whose sum is σ = 500430105422. Its totient is φ = 500430105420.

The previous prime is 500430105403. The next prime is 500430105473. The reversal of 500430105421 is 124501034005.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402704468100 + 97725637321 = 634590^2 + 312611^2 .

It is a cyclic number.

It is not a de Polignac number, because 500430105421 - 2⁷ = 500430105293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500430105121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250215052710 + 250215052711.

It is an arithmetic number, because the mean of its divisors is an integer number (250215052711).

Almost surely, 2^500430105421 is an apocalyptic number.

It is an amenable number.

500430105421 is a deficient number, since it is larger than the sum of its proper divisors (1).

500430105421 is an equidigital number, since it uses as much as digits as its factorization.

500430105421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 500430105421 its reverse (124501034005), we get a palindrome (624931139426).

The spelling of 500430105421 in words is "five hundred billion, four hundred thirty million, one hundred five thousand, four hundred twenty-one".