2142421201 has 2 divisors, whose sum is σ = 2142421202. Its totient is φ = 2142421200.

The previous prime is 2142421147. The next prime is 2142421241. The reversal of 2142421201 is 1021242412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1614110976 + 528310225 = 40176^2 + 22985^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142421201 - 2⁹ = 2142420689 is a prime.

It is not a weakly prime, because it can be changed into another prime (2142421241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071210600 + 1071210601.

It is an arithmetic number, because the mean of its divisors is an integer number (1071210601).

Almost surely, 2^2142421201 is an apocalyptic number.

It is an amenable number.

2142421201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142421201 is an equidigital number, since it uses as much as digits as its factorization.

2142421201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2142421201 is about 46286.2960388925. The cubic root of 2142421201 is about 1289.1445565418.

Adding to 2142421201 its reverse (1021242412), we get a palindrome (3163663613).

The spelling of 2142421201 in words is "two billion, one hundred forty-two million, four hundred twenty-one thousand, two hundred one".