2154143 has 2 divisors, whose sum is σ = 2154144. Its totient is φ = 2154142.

The previous prime is 2154137. The next prime is 2154161. The reversal of 2154143 is 3414512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2154143 - 2⁴ = 2154127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077071 + 1077072.

It is an arithmetic number, because the mean of its divisors is an integer number (1077072).

2^2154143 is an apocalyptic number.

2154143 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154143 is an equidigital number, since it uses as much as digits as its factorization.

2154143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 20.

The square root of 2154143 is about 1467.6999012060. The cubic root of 2154143 is about 129.1491374524.

Adding to 2154143 its reverse (3414512), we get a palindrome (5568655).

The spelling of 2154143 in words is "two million, one hundred fifty-four thousand, one hundred forty-three".