6242121808 has 120 divisors (see below), whose sum is σ = 13658768640. Its totient is φ = 2759178240.

The previous prime is 6242121779. The next prime is 6242121827. The reversal of 6242121808 is 8081212426.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9471783 + ... + 9472441.

It is an arithmetic number, because the mean of its divisors is an integer number (113823072).

Almost surely, 2^6242121808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6242121808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6829384320).

6242121808 is an abundant number, since it is smaller than the sum of its proper divisors (7416646832).

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

6242121808 is a wasteful number, since it uses less digits than its factorization.

6242121808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 6242121808 is about 79007.0997316064. The cubic root of 6242121808 is about 1841.2414636978.

The spelling of 6242121808 in words is "six billion, two hundred forty-two million, one hundred twenty-one thousand, eight hundred eight".