4721020 has 24 divisors (see below), whose sum is σ = 9992304. Its totient is φ = 1873536.

The previous prime is 4721011. The next prime is 4721047. The reversal of 4721020 is 201274.

It is a junction number, because it is equal to n+sod(n) for n = 4720985 and 4721003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1879 + ... + 3601.

It is an arithmetic number, because the mean of its divisors is an integer number (416346).

Almost surely, 2^4721020 is an apocalyptic number.

It is an amenable number.

4721020 is an abundant number, since it is smaller than the sum of its proper divisors (5271284).

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

4721020 is a wasteful number, since it uses less digits than its factorization.

4721020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869 (or 1867 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 4721020 is about 2172.7908320867. The cubic root of 4721020 is about 167.7562129239.

Adding to 4721020 its reverse (201274), we get a palindrome (4922294).

The spelling of 4721020 in words is "four million, seven hundred twenty-one thousand, twenty".