124661549 has 4 divisors (see below), whose sum is σ = 125643264. Its totient is φ = 123679836.

The previous prime is 124661539. The next prime is 124661557. The reversal of 124661549 is 945166421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 945166421 = 163 ⋅5798567.

It is a cyclic number.

It is not a de Polignac number, because 124661549 - 2⁴ = 124661533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124661539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490667 + ... + 490920.

It is an arithmetic number, because the mean of its divisors is an integer number (31410816).

Almost surely, 2^124661549 is an apocalyptic number.

It is an amenable number.

124661549 is a deficient number, since it is larger than the sum of its proper divisors (981715).

124661549 is an equidigital number, since it uses as much as digits as its factorization.

124661549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981714.

The product of its digits is 51840, while the sum is 38.

The square root of 124661549 is about 11165.1936391627. The cubic root of 124661549 is about 499.5483241006.

The spelling of 124661549 in words is "one hundred twenty-four million, six hundred sixty-one thousand, five hundred forty-nine".