2120043287 has 2 divisors, whose sum is σ = 2120043288. Its totient is φ = 2120043286.

The previous prime is 2120043271. The next prime is 2120043337. The reversal of 2120043287 is 7823400212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120043287 - 2⁴ = 2120043271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120043217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060021643 + 1060021644.

It is an arithmetic number, because the mean of its divisors is an integer number (1060021644).

Almost surely, 2^2120043287 is an apocalyptic number.

2120043287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120043287 is an equidigital number, since it uses as much as digits as its factorization.

2120043287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 2120043287 is about 46043.9277972677. The cubic root of 2120043287 is about 1284.6404010257.

Adding to 2120043287 its reverse (7823400212), we get a palindrome (9943443499).

The spelling of 2120043287 in words is "two billion, one hundred twenty million, forty-three thousand, two hundred eighty-seven".