7972141 has 2 divisors, whose sum is σ = 7972142. Its totient is φ = 7972140.

The previous prime is 7972121. The next prime is 7972147. The reversal of 7972141 is 1412797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6869641 + 1102500 = 2621^2 + 1050^2 .

It is an emirp because it is prime and its reverse (1412797) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7972141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7972147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3986070 + 3986071.

It is an arithmetic number, because the mean of its divisors is an integer number (3986071).

Almost surely, 2^7972141 is an apocalyptic number.

It is an amenable number.

7972141 is a deficient number, since it is larger than the sum of its proper divisors (1).

7972141 is an equidigital number, since it uses as much as digits as its factorization.

7972141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 31.

The square root of 7972141 is about 2823.4980077910. The cubic root of 7972141 is about 199.7675716566.

The spelling of 7972141 in words is "seven million, nine hundred seventy-two thousand, one hundred forty-one".