1212943 has 2 divisors, whose sum is σ = 1212944. Its totient is φ = 1212942.

The previous prime is 1212931. The next prime is 1212973. The reversal of 1212943 is 3492121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212943 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606471 + 606472.

It is an arithmetic number, because the mean of its divisors is an integer number (606472).

2^1212943 is an apocalyptic number.

1212943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212943 is an equidigital number, since it uses as much as digits as its factorization.

1212943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 1212943 is about 1101.3369148449. The cubic root of 1212943 is about 106.6465467694.

The spelling of 1212943 in words is "one million, two hundred twelve thousand, nine hundred forty-three".