7123229 has 2 divisors, whose sum is σ = 7123230. Its totient is φ = 7123228.

The previous prime is 7123223. The next prime is 7123231. The reversal of 7123229 is 9223217.

7123229 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4008004 + 3115225 = 2002^2 + 1765^2 .

It is a cyclic number.

It is not a de Polignac number, because 7123229 - 2⁴ = 7123213 is a prime.

Together with 7123231, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7123198 and 7123207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7123223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3561614 + 3561615.

It is an arithmetic number, because the mean of its divisors is an integer number (3561615).

Almost surely, 2^7123229 is an apocalyptic number.

It is an amenable number.

7123229 is a deficient number, since it is larger than the sum of its proper divisors (1).

7123229 is an equidigital number, since it uses as much as digits as its factorization.

7123229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 7123229 is about 2668.9378036964. The cubic root of 7123229 is about 192.4091120953.

The spelling of 7123229 in words is "seven million, one hundred twenty-three thousand, two hundred twenty-nine".