1243967 has 2 divisors, whose sum is σ = 1243968. Its totient is φ = 1243966.

The previous prime is 1243961. The next prime is 1243969. The reversal of 1243967 is 7693421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243967 - 2⁴ = 1243951 is a prime.

Together with 1243969, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621983 + 621984.

It is an arithmetic number, because the mean of its divisors is an integer number (621984).

2^1243967 is an apocalyptic number.

1243967 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243967 is an equidigital number, since it uses as much as digits as its factorization.

1243967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 32.

The square root of 1243967 is about 1115.3326857938. The cubic root of 1243967 is about 107.5481522157.

The spelling of 1243967 in words is "one million, two hundred forty-three thousand, nine hundred sixty-seven".