4042101989 has 2 divisors, whose sum is σ = 4042101990. Its totient is φ = 4042101988.

The previous prime is 4042101979. The next prime is 4042102007. The reversal of 4042101989 is 9891012404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3887522500 + 154579489 = 62350^2 + 12433^2 .

It is a cyclic number.

It is not a de Polignac number, because 4042101989 - 2⁸ = 4042101733 is a prime.

It is a super-2 number, since 2×4042101989² = 32677176978955512242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4042101979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2021050994 + 2021050995.

It is an arithmetic number, because the mean of its divisors is an integer number (2021050995).

Almost surely, 2^4042101989 is an apocalyptic number.

It is an amenable number.

4042101989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4042101989 is an equidigital number, since it uses as much as digits as its factorization.

4042101989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 4042101989 is about 63577.5273897940. The cubic root of 4042101989 is about 1592.9510203519.

The spelling of 4042101989 in words is "four billion, forty-two million, one hundred one thousand, nine hundred eighty-nine".