124747243 has 4 divisors (see below), whose sum is σ = 125068320. Its totient is φ = 124426168.

The previous prime is 124747229. The next prime is 124747253. The reversal of 124747243 is 342747421.

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

It is a cyclic number.

It is not a de Polignac number, because 124747243 - 2²¹ = 122650091 is a prime.

It is a super-2 number, since 2×124747243² = 31123749272202098, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124747199 and 124747208.

It is not an unprimeable number, because it can be changed into a prime (124747253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159955 + ... + 160732.

It is an arithmetic number, because the mean of its divisors is an integer number (31267080).

Almost surely, 2^124747243 is an apocalyptic number.

124747243 is a deficient number, since it is larger than the sum of its proper divisors (321077).

124747243 is an equidigital number, since it uses as much as digits as its factorization.

124747243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321076.

The product of its digits is 37632, while the sum is 34.

The square root of 124747243 is about 11169.0305308921. The cubic root of 124747243 is about 499.6627632606.

The spelling of 124747243 in words is "one hundred twenty-four million, seven hundred forty-seven thousand, two hundred forty-three".