123745213 has 2 divisors, whose sum is σ = 123745214. Its totient is φ = 123745212.

The previous prime is 123745189. The next prime is 123745229. The reversal of 123745213 is 312547321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113998329 + 9746884 = 10677^2 + 3122^2 .

It is a cyclic number.

It is not a de Polignac number, because 123745213 - 2¹³ = 123737021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123755213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61872606 + 61872607.

It is an arithmetic number, because the mean of its divisors is an integer number (61872607).

Almost surely, 2^123745213 is an apocalyptic number.

It is an amenable number.

123745213 is a deficient number, since it is larger than the sum of its proper divisors (1).

123745213 is an equidigital number, since it uses as much as digits as its factorization.

123745213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 123745213 is about 11124.0825689133. The cubic root of 123745213 is about 498.3213210479.

The spelling of 123745213 in words is "one hundred twenty-three million, seven hundred forty-five thousand, two hundred thirteen".