72122329 has 2 divisors, whose sum is σ = 72122330. Its totient is φ = 72122328.

The previous prime is 72122327. The next prime is 72122341. The reversal of 72122329 is 92322127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47886400 + 24235929 = 6920^2 + 4923^2 .

It is a cyclic number.

It is not a de Polignac number, because 72122329 - 2¹ = 72122327 is a prime.

Together with 72122327, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72122297 and 72122306.

It is not a weakly prime, because it can be changed into another prime (72122327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36061164 + 36061165.

It is an arithmetic number, because the mean of its divisors is an integer number (36061165).

Almost surely, 2^72122329 is an apocalyptic number.

It is an amenable number.

72122329 is a deficient number, since it is larger than the sum of its proper divisors (1).

72122329 is an equidigital number, since it uses as much as digits as its factorization.

72122329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 72122329 is about 8492.4866205370. The cubic root of 72122329 is about 416.2522373905.

The spelling of 72122329 in words is "seventy-two million, one hundred twenty-two thousand, three hundred twenty-nine".