7072129 has 2 divisors, whose sum is σ = 7072130. Its totient is φ = 7072128.

The previous prime is 7072127. The next prime is 7072133. The reversal of 7072129 is 9212707.

It is a happy number.

7072129 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7049025 + 23104 = 2655^2 + 152^2 .

It is a cyclic number.

It is not a de Polignac number, because 7072129 - 2¹ = 7072127 is a prime.

Together with 7072127, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 7072097 and 7072106.

It is not a weakly prime, because it can be changed into another prime (7072127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3536064 + 3536065.

It is an arithmetic number, because the mean of its divisors is an integer number (3536065).

Almost surely, 2^7072129 is an apocalyptic number.

It is an amenable number.

7072129 is a deficient number, since it is larger than the sum of its proper divisors (1).

7072129 is an equidigital number, since it uses as much as digits as its factorization.

7072129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 7072129 is about 2659.3474763558. The cubic root of 7072129 is about 191.9479115789.

The spelling of 7072129 in words is "seven million, seventy-two thousand, one hundred twenty-nine".