123261079 has 2 divisors, whose sum is σ = 123261080. Its totient is φ = 123261078.

The previous prime is 123261077. The next prime is 123261133. The reversal of 123261079 is 970162321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123261079 - 2¹ = 123261077 is a prime.

Together with 123261077, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123261079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123261077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61630539 + 61630540.

It is an arithmetic number, because the mean of its divisors is an integer number (61630540).

Almost surely, 2^123261079 is an apocalyptic number.

123261079 is a deficient number, since it is larger than the sum of its proper divisors (1).

123261079 is an equidigital number, since it uses as much as digits as its factorization.

123261079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 123261079 is about 11102.3006174396. The cubic root of 123261079 is about 497.6706033418.

The spelling of 123261079 in words is "one hundred twenty-three million, two hundred sixty-one thousand, seventy-nine".