124143561 has 24 divisors (see below), whose sum is σ = 185702400. Its totient is φ = 79833600.

The previous prime is 124143559. The next prime is 124143629. The reversal of 124143561 is 165341421.

It is a happy number.

It is not a de Polignac number, because 124143561 - 2¹ = 124143559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124145561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124776 + ... + 125766.

It is an arithmetic number, because the mean of its divisors is an integer number (7737600).

Almost surely, 2^124143561 is an apocalyptic number.

It is an amenable number.

124143561 is a deficient number, since it is larger than the sum of its proper divisors (61558839).

124143561 is a wasteful number, since it uses less digits than its factorization.

124143561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1474 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 124143561 is about 11141.9729401933. The cubic root of 124143561 is about 498.8554634044.

Adding to 124143561 its reverse (165341421), we get a palindrome (289484982).

The spelling of 124143561 in words is "one hundred twenty-four million, one hundred forty-three thousand, five hundred sixty-one".