4243121040 has 80 divisors (see below), whose sum is σ = 13845988800. Its totient is φ = 1071945216.

The previous prime is 4243121027. The next prime is 4243121041. The reversal of 4243121040 is 401213424.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 4243120998 and 4243121016.

It is not an unprimeable number, because it can be changed into a prime (4243121041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460695 + ... + 469814.

It is an arithmetic number, because the mean of its divisors is an integer number (173074860).

Almost surely, 2^4243121040 is an apocalyptic number.

4243121040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4243121040 is an abundant number, since it is smaller than the sum of its proper divisors (9602867760).

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

4243121040 is a wasteful number, since it uses less digits than its factorization.

4243121040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930544 (or 930538 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4243121040 is about 65139.2434711979. The cubic root of 4243121040 is about 1618.9315008643.

Adding to 4243121040 its reverse (401213424), we get a palindrome (4644334464).

The spelling of 4243121040 in words is "four billion, two hundred forty-three million, one hundred twenty-one thousand, forty".