124340243 has 4 divisors (see below), whose sum is σ = 126043608. Its totient is φ = 122636880.

The previous prime is 124340207. The next prime is 124340269. The reversal of 124340243 is 342043421.

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 124340243 - 2¹⁸ = 124078099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124342243) 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, 851573 + ... + 851718.

It is an arithmetic number, because the mean of its divisors is an integer number (31510902).

Almost surely, 2^124340243 is an apocalyptic number.

124340243 is a deficient number, since it is larger than the sum of its proper divisors (1703365).

124340243 is an equidigital number, since it uses as much as digits as its factorization.

124340243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703364.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 124340243 is about 11150.7956218379. The cubic root of 124340243 is about 499.1187717861.

Adding to 124340243 its reverse (342043421), we get a palindrome (466383664).

The spelling of 124340243 in words is "one hundred twenty-four million, three hundred forty thousand, two hundred forty-three".