12143739 has 8 divisors (see below), whose sum is σ = 16289280. Its totient is φ = 8047016.

The previous prime is 12143737. The next prime is 12143741. The reversal of 12143739 is 93734121.

It is an interprime number because it is at equal distance from previous prime (12143737) and next prime (12143741).

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 12143739 - 2¹ = 12143737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12143737) 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, 11619 + ... + 12620.

It is an arithmetic number, because the mean of its divisors is an integer number (2036160).

Almost surely, 2^12143739 is an apocalyptic number.

12143739 is a deficient number, since it is larger than the sum of its proper divisors (4145541).

12143739 is a wasteful number, since it uses less digits than its factorization.

12143739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24409.

The product of its digits is 4536, while the sum is 30.

The square root of 12143739 is about 3484.7867940521. The cubic root of 12143739 is about 229.8533343459.

The spelling of 12143739 in words is "twelve million, one hundred forty-three thousand, seven hundred thirty-nine".