12123947 has 8 divisors (see below), whose sum is σ = 13286640. Its totient is φ = 10971360.

The previous prime is 12123899. The next prime is 12123949. The reversal of 12123947 is 74932121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12123947 - 2¹⁸ = 11861803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (1660830).

Almost surely, 2^12123947 is an apocalyptic number.

12123947 is a deficient number, since it is larger than the sum of its proper divisors (1162693).

12123947 is a wasteful number, since it uses less digits than its factorization.

12123947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053.

The product of its digits is 3024, while the sum is 29.

The square root of 12123947 is about 3481.9458640249. The cubic root of 12123947 is about 229.7283939435.

The spelling of 12123947 in words is "twelve million, one hundred twenty-three thousand, nine hundred forty-seven".