124001243 has 2 divisors, whose sum is σ = 124001244. Its totient is φ = 124001242.

The previous prime is 124001233. The next prime is 124001263. The reversal of 124001243 is 342100421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124001243 is a prime.

It is not a weakly prime, because it can be changed into another prime (124001233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62000621 + 62000622.

It is an arithmetic number, because the mean of its divisors is an integer number (62000622).

Almost surely, 2^124001243 is an apocalyptic number.

124001243 is a deficient number, since it is larger than the sum of its proper divisors (1).

124001243 is an equidigital number, since it uses as much as digits as its factorization.

124001243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 124001243 is about 11135.5845378678. The cubic root of 124001243 is about 498.6647614501.

Adding to 124001243 its reverse (342100421), we get a palindrome (466101664).

The spelling of 124001243 in words is "one hundred twenty-four million, one thousand, two hundred forty-three".