124305247 has 4 divisors (see below), whose sum is σ = 135605736. Its totient is φ = 113004760.

The previous prime is 124305211. The next prime is 124305263. The reversal of 124305247 is 742503421.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 124305247 - 2¹⁵ = 124272479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124305287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5650228 + ... + 5650249.

It is an arithmetic number, because the mean of its divisors is an integer number (33901434).

Almost surely, 2^124305247 is an apocalyptic number.

124305247 is a deficient number, since it is larger than the sum of its proper divisors (11300489).

124305247 is a wasteful number, since it uses less digits than its factorization.

124305247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11300488.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 124305247 is about 11149.2262960261. The cubic root of 124305247 is about 499.0719411460.

Adding to 124305247 its reverse (742503421), we get a palindrome (866808668).

It can be divided in two parts, 124 and 305247, that added together give a triangular number (305371 = T₇₈₁).

The spelling of 124305247 in words is "one hundred twenty-four million, three hundred five thousand, two hundred forty-seven".