201421079 has 2 divisors, whose sum is σ = 201421080. Its totient is φ = 201421078.

The previous prime is 201421067. The next prime is 201421093. The reversal of 201421079 is 970124102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201421079 - 2⁴ = 201421063 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201421009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100710539 + 100710540.

It is an arithmetic number, because the mean of its divisors is an integer number (100710540).

Almost surely, 2^201421079 is an apocalyptic number.

201421079 is a deficient number, since it is larger than the sum of its proper divisors (1).

201421079 is an equidigital number, since it uses as much as digits as its factorization.

201421079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 201421079 is about 14192.2894206678. The cubic root of 201421079 is about 586.1853667363.

The spelling of 201421079 in words is "two hundred one million, four hundred twenty-one thousand, seventy-nine".