421678458743 has 2 divisors, whose sum is σ = 421678458744. Its totient is φ = 421678458742.

The previous prime is 421678458709. The next prime is 421678458749. The reversal of 421678458743 is 347854876124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421678458743 - 2⁶ = 421678458679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421678458749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210839229371 + 210839229372.

It is an arithmetic number, because the mean of its divisors is an integer number (210839229372).

Almost surely, 2^421678458743 is an apocalyptic number.

421678458743 is a deficient number, since it is larger than the sum of its proper divisors (1).

421678458743 is an equidigital number, since it uses as much as digits as its factorization.

421678458743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36126720, while the sum is 59.

The spelling of 421678458743 in words is "four hundred twenty-one billion, six hundred seventy-eight million, four hundred fifty-eight thousand, seven hundred forty-three".