4090420 has 12 divisors (see below), whose sum is σ = 8589924. Its totient is φ = 1636160.

The previous prime is 4090403. The next prime is 4090423. The reversal of 4090420 is 240904.

4090420 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1387684 + 2702736 = 1178^2 + 1644^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4090423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102241 + ... + 102280.

It is an arithmetic number, because the mean of its divisors is an integer number (715827).

Almost surely, 2^4090420 is an apocalyptic number.

It is an amenable number.

4090420 is an abundant number, since it is smaller than the sum of its proper divisors (4499504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4090420 is a wasteful number, since it uses less digits than its factorization.

4090420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204530 (or 204528 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 4090420 is about 2022.4786772671. The cubic root of 4090420 is about 159.9273107317.

The spelling of 4090420 in words is "four million, ninety thousand, four hundred twenty".