124143557 has 2 divisors, whose sum is σ = 124143558. Its totient is φ = 124143556.

The previous prime is 124143553. The next prime is 124143559. The reversal of 124143557 is 755341421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117310561 + 6832996 = 10831^2 + 2614^2 .

It is a cyclic number.

It is not a de Polignac number, because 124143557 - 2² = 124143553 is a prime.

It is a super-2 number, since 2×124143557² = 30823245489224498, which contains 22 as substring.

Together with 124143559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124143553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62071778 + 62071779.

It is an arithmetic number, because the mean of its divisors is an integer number (62071779).

Almost surely, 2^124143557 is an apocalyptic number.

It is an amenable number.

124143557 is a deficient number, since it is larger than the sum of its proper divisors (1).

124143557 is an equidigital number, since it uses as much as digits as its factorization.

124143557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 32.

The square root of 124143557 is about 11141.9727606919. The cubic root of 124143557 is about 498.8554580465.

Adding to 124143557 its reverse (755341421), we get a palindrome (879484978).

The spelling of 124143557 in words is "one hundred twenty-four million, one hundred forty-three thousand, five hundred fifty-seven".