421078632043 has 2 divisors, whose sum is σ = 421078632044. Its totient is φ = 421078632042.

The previous prime is 421078632031. The next prime is 421078632097. The reversal of 421078632043 is 340236870124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421078632043 - 2⁵ = 421078632011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421078631987 and 421078632005.

It is not a weakly prime, because it can be changed into another prime (421078632943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210539316021 + 210539316022.

It is an arithmetic number, because the mean of its divisors is an integer number (210539316022).

Almost surely, 2^421078632043 is an apocalyptic number.

421078632043 is a deficient number, since it is larger than the sum of its proper divisors (1).

421078632043 is an equidigital number, since it uses as much as digits as its factorization.

421078632043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 421078632043 in words is "four hundred twenty-one billion, seventy-eight million, six hundred thirty-two thousand, forty-three".