4242121506 has 24 divisors (see below), whose sum is σ = 10504301184. Its totient is φ = 1212034680.

The previous prime is 4242121501. The next prime is 4242121511. The reversal of 4242121506 is 6051212424.

4242121506 is a `hidden beast` number, since 424 + 21 + 215 + 0 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (4242121501) and next prime (4242121511).

It is a self number, because there is not a number n which added to its sum of digits gives 4242121506.

It is not an unprimeable number, because it can be changed into a prime (4242121501) 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 11 ways as a sum of consecutive naturals, for example, 16833690 + ... + 16833941.

It is an arithmetic number, because the mean of its divisors is an integer number (437679216).

Almost surely, 2^4242121506 is an apocalyptic number.

4242121506 is an abundant number, since it is smaller than the sum of its proper divisors (6262179678).

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

4242121506 is a wasteful number, since it uses less digits than its factorization.

4242121506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33667646 (or 33667643 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 4242121506 is about 65131.5707318655. The cubic root of 4242121506 is about 1618.8043692755.

The spelling of 4242121506 in words is "four billion, two hundred forty-two million, one hundred twenty-one thousand, five hundred six".