2154043 has 2 divisors, whose sum is σ = 2154044. Its totient is φ = 2154042.

The previous prime is 2154041. The next prime is 2154059. The reversal of 2154043 is 3404512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2154043 - 2¹ = 2154041 is a prime.

Together with 2154041, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2154043.

It is not a weakly prime, because it can be changed into another prime (2154041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077021 + 1077022.

It is an arithmetic number, because the mean of its divisors is an integer number (1077022).

2^2154043 is an apocalyptic number.

2154043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154043 is an equidigital number, since it uses as much as digits as its factorization.

2154043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2154043 is about 1467.6658339009. The cubic root of 2154043 is about 129.1471389603.

Adding to 2154043 its reverse (3404512), we get a palindrome (5558555).

The spelling of 2154043 in words is "two million, one hundred fifty-four thousand, forty-three".