4121720 has 16 divisors (see below), whose sum is σ = 9273960. Its totient is φ = 1648672.

The previous prime is 4121717. The next prime is 4121737. The reversal of 4121720 is 271214.

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 3 ways as a sum of consecutive naturals, for example, 51482 + ... + 51561.

Almost surely, 2^4121720 is an apocalyptic number.

4121720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4121720 is an abundant number, since it is smaller than the sum of its proper divisors (5152240).

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

4121720 is a wasteful number, since it uses less digits than its factorization.

4121720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103054 (or 103050 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 4121720 is about 2030.2019603970. The cubic root of 4121720 is about 160.3341972984.

Adding to 4121720 its reverse (271214), we get a palindrome (4392934).

The spelling of 4121720 in words is "four million, one hundred twenty-one thousand, seven hundred twenty".