4120353021 has 4 divisors (see below), whose sum is σ = 5493804032. Its totient is φ = 2746902012.

The previous prime is 4120353007. The next prime is 4120353023. The reversal of 4120353021 is 1203530214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-4120353021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4120353023) 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, 686725501 + ... + 686725506.

It is an arithmetic number, because the mean of its divisors is an integer number (1373451008).

Almost surely, 2^4120353021 is an apocalyptic number.

It is an amenable number.

4120353021 is a deficient number, since it is larger than the sum of its proper divisors (1373451011).

4120353021 is a wasteful number, since it uses less digits than its factorization.

4120353021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373451010.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 4120353021 is about 64189.9760165090. The cubic root of 4120353021 is about 1603.1647025601.

Adding to 4120353021 its reverse (1203530214), we get a palindrome (5323883235).

The spelling of 4120353021 in words is "four billion, one hundred twenty million, three hundred fifty-three thousand, twenty-one".