6975242921 has 8 divisors (see below), whose sum is σ = 7113319560. Its totient is φ = 6837405952.

The previous prime is 6975242891. The next prime is 6975242941. The reversal of 6975242921 is 1292425796.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1474944025 + 5500298896 = 38405^2 + 74164^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6975242921 - 2¹⁸ = 6974980777 is a prime.

It is a super-2 number, since 2×6975242921² = 97308027613921224482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6975242941) 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 7 ways as a sum of consecutive naturals, for example, 560 + ... + 118113.

It is an arithmetic number, because the mean of its divisors is an integer number (889164945).

Almost surely, 2^6975242921 is an apocalyptic number.

It is an amenable number.

6975242921 is a deficient number, since it is larger than the sum of its proper divisors (138076639).

6975242921 is a wasteful number, since it uses less digits than its factorization.

6975242921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119835.

The product of its digits is 544320, while the sum is 47.

The square root of 6975242921 is about 83517.9197597737. The cubic root of 6975242921 is about 1910.6733480192.

The spelling of 6975242921 in words is "six billion, nine hundred seventy-five million, two hundred forty-two thousand, nine hundred twenty-one".