1262543 has 2 divisors, whose sum is σ = 1262544. Its totient is φ = 1262542.

The previous prime is 1262519. The next prime is 1262557. The reversal of 1262543 is 3452621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1262543 - 2⁶ = 1262479 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1262563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631271 + 631272.

It is an arithmetic number, because the mean of its divisors is an integer number (631272).

2^1262543 is an apocalyptic number.

1262543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1262543 is an equidigital number, since it uses as much as digits as its factorization.

1262543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 1262543 is about 1123.6293872981. The cubic root of 1262543 is about 108.0808436758.

The spelling of 1262543 in words is "one million, two hundred sixty-two thousand, five hundred forty-three".