123473549 has 2 divisors, whose sum is σ = 123473550. Its totient is φ = 123473548.

The previous prime is 123473521. The next prime is 123473573. The reversal of 123473549 is 945374321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84971524 + 38502025 = 9218^2 + 6205^2 .

It is a cyclic number.

It is not a de Polignac number, because 123473549 - 2⁸ = 123473293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123473599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61736774 + 61736775.

It is an arithmetic number, because the mean of its divisors is an integer number (61736775).

Almost surely, 2^123473549 is an apocalyptic number.

It is an amenable number.

123473549 is a deficient number, since it is larger than the sum of its proper divisors (1).

123473549 is an equidigital number, since it uses as much as digits as its factorization.

123473549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 123473549 is about 11111.8652349639. The cubic root of 123473549 is about 497.9563907018.

The spelling of 123473549 in words is "one hundred twenty-three million, four hundred seventy-three thousand, five hundred forty-nine".