4020287 has 2 divisors, whose sum is σ = 4020288. Its totient is φ = 4020286.

The previous prime is 4020283. The next prime is 4020293. The reversal of 4020287 is 7820204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4020287 - 2² = 4020283 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4020281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010143 + 2010144.

It is an arithmetic number, because the mean of its divisors is an integer number (2010144).

Almost surely, 2^4020287 is an apocalyptic number.

4020287 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020287 is an equidigital number, since it uses as much as digits as its factorization.

4020287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 4020287 is about 2005.0653355938. The cubic root of 4020287 is about 159.0080161564.

The spelling of 4020287 in words is "four million, twenty thousand, two hundred eighty-seven".