4020107857 has 2 divisors, whose sum is σ = 4020107858. Its totient is φ = 4020107856.

The previous prime is 4020107849. The next prime is 4020107887. The reversal of 4020107857 is 7587010204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3124362816 + 895745041 = 55896^2 + 29929^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020107857 - 2³ = 4020107849 is a prime.

It is a super-2 number, since 2×4020107857² = 32322534363826264898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4020107887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010053928 + 2010053929.

It is an arithmetic number, because the mean of its divisors is an integer number (2010053929).

Almost surely, 2^4020107857 is an apocalyptic number.

It is an amenable number.

4020107857 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020107857 is an equidigital number, since it uses as much as digits as its factorization.

4020107857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 4020107857 is about 63404.3204915880. The cubic root of 4020107857 is about 1590.0565433526.

The spelling of 4020107857 in words is "four billion, twenty million, one hundred seven thousand, eight hundred fifty-seven".