12156143 has 8 divisors (see below), whose sum is σ = 13094400. Its totient is φ = 11247768.

The previous prime is 12156119. The next prime is 12156149. The reversal of 12156143 is 34165121.

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

It is not a de Polignac number, because 12156143 - 2¹² = 12152047 is a prime.

It is a super-3 number, since 3×12156143³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12156149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6623 + ... + 8256.

It is an arithmetic number, because the mean of its divisors is an integer number (1636800).

Almost surely, 2^12156143 is an apocalyptic number.

12156143 is a deficient number, since it is larger than the sum of its proper divisors (938257).

12156143 is a wasteful number, since it uses less digits than its factorization.

12156143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14941.

The product of its digits is 720, while the sum is 23.

The square root of 12156143 is about 3486.5660756681. The cubic root of 12156143 is about 229.9315675428.

The spelling of 12156143 in words is "twelve million, one hundred fifty-six thousand, one hundred forty-three".