124107661 has 4 divisors (see below), whose sum is σ = 124186972. Its totient is φ = 124028352.

The previous prime is 124107653. The next prime is 124107671. The reversal of 124107661 is 166701421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166701421 = 19 ⋅8773759.

It can be written as a sum of positive squares in 2 ways, for example, as 41860900 + 82246761 = 6470^2 + 9069^2 .

It is a cyclic number.

It is not a de Polignac number, because 124107661 - 2³ = 124107653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124107631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37260 + ... + 40453.

It is an arithmetic number, because the mean of its divisors is an integer number (31046743).

Almost surely, 2^124107661 is an apocalyptic number.

It is an amenable number.

124107661 is a deficient number, since it is larger than the sum of its proper divisors (79311).

124107661 is an equidigital number, since it uses as much as digits as its factorization.

124107661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79310.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 124107661 is about 11140.3617984337. The cubic root of 124107661 is about 498.8073722064.

The spelling of 124107661 in words is "one hundred twenty-four million, one hundred seven thousand, six hundred sixty-one".