1210123259 has 2 divisors, whose sum is σ = 1210123260. Its totient is φ = 1210123258.

The previous prime is 1210123193. The next prime is 1210123261. The reversal of 1210123259 is 9523210121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1210123259 - 2²⁴ = 1193346043 is a prime.

It is a Sophie Germain prime.

Together with 1210123261, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1210129259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605061629 + 605061630.

It is an arithmetic number, because the mean of its divisors is an integer number (605061630).

Almost surely, 2^1210123259 is an apocalyptic number.

1210123259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210123259 is an equidigital number, since it uses as much as digits as its factorization.

1210123259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1210123259 is about 34786.8259402895. The cubic root of 1210123259 is about 1065.6384187519.

The spelling of 1210123259 in words is "one billion, two hundred ten million, one hundred twenty-three thousand, two hundred fifty-nine".