4140020 has 24 divisors (see below), whose sum is σ = 8734824. Its totient is φ = 1648256.

The previous prime is 4140001. The next prime is 4140029. The reversal of 4140020 is 200414.

It can be written as a sum of positive squares in 4 ways, for example, as 35344 + 4104676 = 188^2 + 2026^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4139983 and 4140010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4140029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6014 + ... + 6666.

It is an arithmetic number, because the mean of its divisors is an integer number (363951).

Almost surely, 2^4140020 is an apocalyptic number.

It is an amenable number.

4140020 is an abundant number, since it is smaller than the sum of its proper divisors (4594804).

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

4140020 is a wasteful number, since it uses less digits than its factorization.

4140020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 4140020 is about 2034.7039096635. The cubic root of 4140020 is about 160.5711359309.

Adding to 4140020 its reverse (200414), we get a palindrome (4340434).

The spelling of 4140020 in words is "four million, one hundred forty thousand, twenty".