4142505205021 has 2 divisors, whose sum is σ = 4142505205022. Its totient is φ = 4142505205020.

The previous prime is 4142505205009. The next prime is 4142505205037. The reversal of 4142505205021 is 1205025052414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4119738921796 + 22766283225 = 2029714^2 + 150885^2 .

It is a cyclic number.

It is not a de Polignac number, because 4142505205021 - 2¹³ = 4142505196829 is a prime.

It is a super-2 number, since 2×4142505205021² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4142505208021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2071252602510 + 2071252602511.

It is an arithmetic number, because the mean of its divisors is an integer number (2071252602511).

Almost surely, 2^{4142505205021} is an apocalyptic number.

It is an amenable number.

4142505205021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4142505205021 is an equidigital number, since it uses as much as digits as its factorization.

4142505205021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 4142505205021 in words is "four trillion, one hundred forty-two billion, five hundred five million, two hundred five thousand, twenty-one".