4243121012 has 12 divisors (see below), whose sum is σ = 7996651236. Its totient is φ = 1958363520.

The previous prime is 4243120997. The next prime is 4243121023. The reversal of 4243121012 is 2101213424.

It can be written as a sum of positive squares in 2 ways, for example, as 2011881316 + 2231239696 = 44854^2 + 47236^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40799189 + ... + 40799292.

It is an arithmetic number, because the mean of its divisors is an integer number (666387603).

Almost surely, 2^4243121012 is an apocalyptic number.

It is an amenable number.

4243121012 is a deficient number, since it is larger than the sum of its proper divisors (3753530224).

4243121012 is a wasteful number, since it uses less digits than its factorization.

4243121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81598498 (or 81598496 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4243121012 is about 65139.2432562737. The cubic root of 4243121012 is about 1618.9314973032.

Adding to 4243121012 its reverse (2101213424), we get a palindrome (6344334436).

The spelling of 4243121012 in words is "four billion, two hundred forty-three million, one hundred twenty-one thousand, twelve".