124061909 has 4 divisors (see below), whose sum is σ = 125159916. Its totient is φ = 122963904.

The previous prime is 124061831. The next prime is 124061939. The reversal of 124061909 is 909160421.

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 53333809 + 70728100 = 7303^2 + 8410^2 .

It is a cyclic number.

It is not a de Polignac number, because 124061909 - 2⁸ = 124061653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124061939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548834 + ... + 549059.

It is an arithmetic number, because the mean of its divisors is an integer number (31289979).

Almost surely, 2^124061909 is an apocalyptic number.

It is an amenable number.

124061909 is a deficient number, since it is larger than the sum of its proper divisors (1098007).

124061909 is a wasteful number, since it uses less digits than its factorization.

124061909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098006.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 124061909 is about 11138.3081749429. The cubic root of 124061909 is about 498.7460699477.

The spelling of 124061909 in words is "one hundred twenty-four million, sixty-one thousand, nine hundred nine".