124312549 has 4 divisors (see below), whose sum is σ = 124901920. Its totient is φ = 123723180.

The previous prime is 124312547. The next prime is 124312577. The reversal of 124312549 is 945213421.

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: 945213421 = 67 ⋅14107663.

It is a cyclic number.

It is not a de Polignac number, because 124312549 - 2¹ = 124312547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124312549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124312547) 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, 294369 + ... + 294790.

It is an arithmetic number, because the mean of its divisors is an integer number (31225480).

Almost surely, 2^124312549 is an apocalyptic number.

It is an amenable number.

124312549 is a deficient number, since it is larger than the sum of its proper divisors (589371).

124312549 is an equidigital number, since it uses as much as digits as its factorization.

124312549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589370.

The product of its digits is 8640, while the sum is 31.

The square root of 124312549 is about 11149.5537578865. The cubic root of 124312549 is about 499.0817131978.

The spelling of 124312549 in words is "one hundred twenty-four million, three hundred twelve thousand, five hundred forty-nine".