4181020 has 24 divisors (see below), whose sum is σ = 8820000. Its totient is φ = 1664832.

The previous prime is 4180987. The next prime is 4181041. The reversal of 4181020 is 201814.

It is a happy number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 4180985 and 4181003.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6681 + ... + 7279.

It is an arithmetic number, because the mean of its divisors is an integer number (367500).

Almost surely, 2^4181020 is an apocalyptic number.

It is an amenable number.

4181020 is an abundant number, since it is smaller than the sum of its proper divisors (4638980).

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

4181020 is a wasteful number, since it uses less digits than its factorization.

4181020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 4181020 is about 2044.7542639643. The cubic root of 4181020 is about 161.0994588834.

Adding to 4181020 its reverse (201814), we get a palindrome (4382834).

The spelling of 4181020 in words is "four million, one hundred eighty-one thousand, twenty".