12124547939 has 4 divisors (see below), whose sum is σ = 13856626224. Its totient is φ = 10392469656.

The previous prime is 12124547923. The next prime is 12124547977. The reversal of 12124547939 is 93974542121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12124547939 - 2⁴ = 12124547923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12124547893 and 12124547902.

It is not an unprimeable number, because it can be changed into a prime (12124547639) 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, 866039132 + ... + 866039145.

It is an arithmetic number, because the mean of its divisors is an integer number (3464156556).

Almost surely, 2^12124547939 is an apocalyptic number.

12124547939 is a deficient number, since it is larger than the sum of its proper divisors (1732078285).

12124547939 is an equidigital number, since it uses as much as digits as its factorization.

12124547939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732078284.

The product of its digits is 544320, while the sum is 47.

The spelling of 12124547939 in words is "twelve billion, one hundred twenty-four million, five hundred forty-seven thousand, nine hundred thirty-nine".