124242143 has 2 divisors, whose sum is σ = 124242144. Its totient is φ = 124242142.

The previous prime is 124242133. The next prime is 124242161. The reversal of 124242143 is 341242421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124242143 - 2²⁴ = 107464927 is a prime.

It is a super-2 number, since 2×124242143² = 30872220194464898, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124242133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62121071 + 62121072.

It is an arithmetic number, because the mean of its divisors is an integer number (62121072).

Almost surely, 2^124242143 is an apocalyptic number.

124242143 is a deficient number, since it is larger than the sum of its proper divisors (1).

124242143 is an equidigital number, since it uses as much as digits as its factorization.

124242143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 23.

The square root of 124242143 is about 11146.3959646156. The cubic root of 124242143 is about 498.9874749702.

Adding to 124242143 its reverse (341242421), we get a palindrome (465484564).

The spelling of 124242143 in words is "one hundred twenty-four million, two hundred forty-two thousand, one hundred forty-three".