124312109 has 16 divisors (see below), whose sum is σ = 134392320. Its totient is φ = 114566400.

The previous prime is 124312103. The next prime is 124312141. The reversal of 124312109 is 901213421.

It is a de Polignac number, because none of the positive numbers 2^k-124312109 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 (124312103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202487 + ... + 203099.

It is an arithmetic number, because the mean of its divisors is an integer number (8399520).

Almost surely, 2^124312109 is an apocalyptic number.

It is an amenable number.

124312109 is a deficient number, since it is larger than the sum of its proper divisors (10080211).

124312109 is a wasteful number, since it uses less digits than its factorization.

124312109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 124312109 is about 11149.5340261376. The cubic root of 124312109 is about 499.0811243696.

It can be divided in two parts, 124312 and 109, that added together give a palindrome (124421).

The spelling of 124312109 in words is "one hundred twenty-four million, three hundred twelve thousand, one hundred nine".