4020457 has 24 divisors (see below), whose sum is σ = 5096256. Its totient is φ = 3102624.

The previous prime is 4020433. The next prime is 4020461. The reversal of 4020457 is 7540204.

It is a de Polignac number, because none of the positive numbers 2^k-4020457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4020407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93478 + ... + 93520.

It is an arithmetic number, because the mean of its divisors is an integer number (212344).

Almost surely, 2^4020457 is an apocalyptic number.

It is an amenable number.

4020457 is a deficient number, since it is larger than the sum of its proper divisors (1075799).

4020457 is a wasteful number, since it uses less digits than its factorization.

4020457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 4020457 is about 2005.1077277792. The cubic root of 4020457 is about 159.0102573713.

The spelling of 4020457 in words is "four million, twenty thousand, four hundred fifty-seven".