420193684373 has 2 divisors, whose sum is σ = 420193684374. Its totient is φ = 420193684372.

The previous prime is 420193684369. The next prime is 420193684441. The reversal of 420193684373 is 373486391024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 413400133444 + 6793550929 = 642962^2 + 82423^2 .

It is a cyclic number.

It is not a de Polignac number, because 420193684373 - 2² = 420193684369 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420193687373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210096842186 + 210096842187.

It is an arithmetic number, because the mean of its divisors is an integer number (210096842187).

Almost surely, 2^420193684373 is an apocalyptic number.

It is an amenable number.

420193684373 is a deficient number, since it is larger than the sum of its proper divisors (1).

420193684373 is an equidigital number, since it uses as much as digits as its factorization.

420193684373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 420193684373 in words is "four hundred twenty billion, one hundred ninety-three million, six hundred eighty-four thousand, three hundred seventy-three".