219942601 has 2 divisors, whose sum is σ = 219942602. Its totient is φ = 219942600.

The previous prime is 219942589. The next prime is 219942623. The reversal of 219942601 is 106249912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204919225 + 15023376 = 14315^2 + 3876^2 .

It is a cyclic number.

It is not a de Polignac number, because 219942601 - 2⁹ = 219942089 is a prime.

It is not a weakly prime, because it can be changed into another prime (219942631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109971300 + 109971301.

It is an arithmetic number, because the mean of its divisors is an integer number (109971301).

Almost surely, 2^219942601 is an apocalyptic number.

It is an amenable number.

219942601 is a deficient number, since it is larger than the sum of its proper divisors (1).

219942601 is an equidigital number, since it uses as much as digits as its factorization.

219942601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 219942601 is about 14830.4619280722. The cubic root of 219942601 is about 603.6285680678.

The spelling of 219942601 in words is "two hundred nineteen million, nine hundred forty-two thousand, six hundred one".