421724025433 has 2 divisors, whose sum is σ = 421724025434. Its totient is φ = 421724025432.

The previous prime is 421724025427. The next prime is 421724025469. The reversal of 421724025433 is 334520427124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291812798809 + 129911226624 = 540197^2 + 360432^2 .

It is a cyclic number.

It is not a de Polignac number, because 421724025433 - 2²¹ = 421721928281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421724025392 and 421724025401.

It is not a weakly prime, because it can be changed into another prime (421724025473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210862012716 + 210862012717.

It is an arithmetic number, because the mean of its divisors is an integer number (210862012717).

Almost surely, 2^421724025433 is an apocalyptic number.

It is an amenable number.

421724025433 is a deficient number, since it is larger than the sum of its proper divisors (1).

421724025433 is an equidigital number, since it uses as much as digits as its factorization.

421724025433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 37.

The spelling of 421724025433 in words is "four hundred twenty-one billion, seven hundred twenty-four million, twenty-five thousand, four hundred thirty-three".