124136161 has 4 divisors (see below), whose sum is σ = 124344000. Its totient is φ = 123928324.

The previous prime is 124136149. The next prime is 124136167. The reversal of 124136161 is 161631421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124136161 - 2¹¹ = 124134113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124136167) 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, 103021 + ... + 104218.

It is an arithmetic number, because the mean of its divisors is an integer number (31086000).

Almost surely, 2^124136161 is an apocalyptic number.

It is an amenable number.

124136161 is a deficient number, since it is larger than the sum of its proper divisors (207839).

124136161 is an equidigital number, since it uses as much as digits as its factorization.

124136161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207838.

The product of its digits is 864, while the sum is 25.

The square root of 124136161 is about 11141.6408576116. The cubic root of 124136161 is about 498.8455512141.

Adding to 124136161 its reverse (161631421), we get a palindrome (285767582).

The spelling of 124136161 in words is "one hundred twenty-four million, one hundred thirty-six thousand, one hundred sixty-one".