4020357 has 16 divisors (see below), whose sum is σ = 6050880. Its totient is φ = 2352000.

The previous prime is 4020353. The next prime is 4020361. The reversal of 4020357 is 7530204.

It is a happy number.

4020357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4020353) and next prime (4020361).

It is not a de Polignac number, because 4020357 - 2² = 4020353 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1144 + ... + 3057.

It is an arithmetic number, because the mean of its divisors is an integer number (378180).

Almost surely, 2^4020357 is an apocalyptic number.

It is an amenable number.

4020357 is a deficient number, since it is larger than the sum of its proper divisors (2030523).

4020357 is a wasteful number, since it uses less digits than its factorization.

4020357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 4020357 is about 2005.0827913081. The cubic root of 4020357 is about 159.0089390172.

The spelling of 4020357 in words is "four million, twenty thousand, three hundred fifty-seven".