214142143921 has 2 divisors, whose sum is σ = 214142143922. Its totient is φ = 214142143920.

The previous prime is 214142143861. The next prime is 214142144039. The reversal of 214142143921 is 129341241412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209265077025 + 4877066896 = 457455^2 + 69836^2 .

It is a cyclic number.

It is not a de Polignac number, because 214142143921 - 2⁹ = 214142143409 is a prime.

It is not a weakly prime, because it can be changed into another prime (214142143121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107071071960 + 107071071961.

It is an arithmetic number, because the mean of its divisors is an integer number (107071071961).

Almost surely, 2^214142143921 is an apocalyptic number.

It is an amenable number.

214142143921 is a deficient number, since it is larger than the sum of its proper divisors (1).

214142143921 is an equidigital number, since it uses as much as digits as its factorization.

214142143921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The spelling of 214142143921 in words is "two hundred fourteen billion, one hundred forty-two million, one hundred forty-three thousand, nine hundred twenty-one".