124661 has 4 divisors (see below), whose sum is σ = 132012. Its totient is φ = 117312.
The previous prime is 124643. The next prime is 124669. The reversal of 124661 is 166421.
It is a happy number.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 37636 + 87025 = 194^2 + 295^2 .
It is a cyclic number.
It is not a de Polignac number, because 124661 - 210 = 123637 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 124661.
It is not an unprimeable number, because it can be changed into a prime (124669) 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, 3650 + ... + 3683.
It is an arithmetic number, because the mean of its divisors is an integer number (33003).
2124661 is an apocalyptic number.
It is an amenable number.
124661 is a deficient number, since it is larger than the sum of its proper divisors (7351).
124661 is an equidigital number, since it uses as much as digits as its factorization.
124661 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7350.
The product of its digits is 288, while the sum is 20.
The square root of 124661 is about 353.0736467084. The cubic root of 124661 is about 49.9547590775.
The spelling of 124661 in words is "one hundred twenty-four thousand, six hundred sixty-one".
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