123128167 has 2 divisors, whose sum is σ = 123128168. Its totient is φ = 123128166.

The previous prime is 123128149. The next prime is 123128209. The reversal of 123128167 is 761821321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123128167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123128147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61564083 + 61564084.

It is an arithmetic number, because the mean of its divisors is an integer number (61564084).

Almost surely, 2^123128167 is an apocalyptic number.

123128167 is a deficient number, since it is larger than the sum of its proper divisors (1).

123128167 is an equidigital number, since it uses as much as digits as its factorization.

123128167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 31.

The square root of 123128167 is about 11096.3132165598. The cubic root of 123128167 is about 497.4916601718.

Adding to 123128167 its reverse (761821321), we get a palindrome (884949488).

The spelling of 123128167 in words is "one hundred twenty-three million, one hundred twenty-eight thousand, one hundred sixty-seven".