72179141 has 2 divisors, whose sum is σ = 72179142. Its totient is φ = 72179140.

The previous prime is 72179137. The next prime is 72179143. The reversal of 72179141 is 14197127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49758916 + 22420225 = 7054^2 + 4735^2 .

It is a cyclic number.

It is not a de Polignac number, because 72179141 - 2² = 72179137 is a prime.

It is a super-3 number, since 3×72179141³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 72179143, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72179098 and 72179107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72179143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36089570 + 36089571.

It is an arithmetic number, because the mean of its divisors is an integer number (36089571).

Almost surely, 2^72179141 is an apocalyptic number.

It is an amenable number.

72179141 is a deficient number, since it is larger than the sum of its proper divisors (1).

72179141 is an equidigital number, since it uses as much as digits as its factorization.

72179141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 32.

The square root of 72179141 is about 8495.8308010459. The cubic root of 72179141 is about 416.3615050557.

The spelling of 72179141 in words is "seventy-two million, one hundred seventy-nine thousand, one hundred forty-one".