12020143 has 8 divisors (see below), whose sum is σ = 12298608. Its totient is φ = 11745024.

The previous prime is 12020137. The next prime is 12020161. The reversal of 12020143 is 34102021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12020143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020443) 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, 7305 + ... + 8797.

It is an arithmetic number, because the mean of its divisors is an integer number (1537326).

Almost surely, 2^12020143 is an apocalyptic number.

12020143 is a deficient number, since it is larger than the sum of its proper divisors (278465).

12020143 is an equidigital number, since it uses as much as digits as its factorization.

12020143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12020143 is about 3467.0077877040. The cubic root of 12020143 is about 229.0708767853.

Adding to 12020143 its reverse (34102021), we get a palindrome (46122164).

The spelling of 12020143 in words is "twelve million, twenty thousand, one hundred forty-three".