123994049 has 2 divisors, whose sum is σ = 123994050. Its totient is φ = 123994048.

The previous prime is 123994009. The next prime is 123994051. The reversal of 123994049 is 940499321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118113424 + 5880625 = 10868^2 + 2425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123994049 is a prime.

Together with 123994051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 123993997 and 123994015.

It is not a weakly prime, because it can be changed into another prime (123994009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61997024 + 61997025.

It is an arithmetic number, because the mean of its divisors is an integer number (61997025).

Almost surely, 2^123994049 is an apocalyptic number.

It is an amenable number.

123994049 is a deficient number, since it is larger than the sum of its proper divisors (1).

123994049 is an equidigital number, since it uses as much as digits as its factorization.

123994049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 123994049 is about 11135.2615146659. The cubic root of 123994049 is about 498.6551178272.

The spelling of 123994049 in words is "one hundred twenty-three million, nine hundred ninety-four thousand, forty-nine".