1216043 has 2 divisors, whose sum is σ = 1216044. Its totient is φ = 1216042.

The previous prime is 1216021. The next prime is 1216067. The reversal of 1216043 is 3406121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1216043 - 2⁸ = 1215787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1216013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608021 + 608022.

It is an arithmetic number, because the mean of its divisors is an integer number (608022).

2^1216043 is an apocalyptic number.

1216043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216043 is an equidigital number, since it uses as much as digits as its factorization.

1216043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1216043 is about 1102.7433971691. The cubic root of 1216043 is about 106.7373240620.

The spelling of 1216043 in words is "one million, two hundred sixteen thousand, forty-three".