200420042093 has 2 divisors, whose sum is σ = 200420042094. Its totient is φ = 200420042092.

The previous prime is 200420042089. The next prime is 200420042099. The reversal of 200420042093 is 390240024002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100414201924 + 100005840169 = 316882^2 + 316237^2 .

It is a cyclic number.

It is not a de Polignac number, because 200420042093 - 2² = 200420042089 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200420042099) 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, 100210021046 + 100210021047.

It is an arithmetic number, because the mean of its divisors is an integer number (100210021047).

Almost surely, 2^200420042093 is an apocalyptic number.

It is an amenable number.

200420042093 is a deficient number, since it is larger than the sum of its proper divisors (1).

200420042093 is an equidigital number, since it uses as much as digits as its factorization.

200420042093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 200420042093 its reverse (390240024002), we get a palindrome (590660066095).

The spelling of 200420042093 in words is "two hundred billion, four hundred twenty million, forty-two thousand, ninety-three".