123745051 has 2 divisors, whose sum is σ = 123745052. Its totient is φ = 123745050.

The previous prime is 123745049. The next prime is 123745067. The reversal of 123745051 is 150547321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123745051 - 2¹ = 123745049 is a prime.

Together with 123745049, 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 (123745021) 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, 61872525 + 61872526.

It is an arithmetic number, because the mean of its divisors is an integer number (61872526).

Almost surely, 2^123745051 is an apocalyptic number.

123745051 is a deficient number, since it is larger than the sum of its proper divisors (1).

123745051 is an equidigital number, since it uses as much as digits as its factorization.

123745051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 123745051 is about 11124.0752874115. The cubic root of 123745051 is about 498.3211035901.

The spelling of 123745051 in words is "one hundred twenty-three million, seven hundred forty-five thousand, fifty-one".