1262143 has 2 divisors, whose sum is σ = 1262144. Its totient is φ = 1262142.

The previous prime is 1262119. The next prime is 1262147. The reversal of 1262143 is 3412621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1262143 - 2¹³ = 1253951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1262143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1262147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631071 + 631072.

It is an arithmetic number, because the mean of its divisors is an integer number (631072).

2^1262143 is an apocalyptic number.

1262143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1262143 is an equidigital number, since it uses as much as digits as its factorization.

1262143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 1262143 is about 1123.4513785652. The cubic root of 1262143 is about 108.0694283804.

Adding to 1262143 its reverse (3412621), we get a palindrome (4674764).

It can be divided in two parts, 1 and 262143, that added together give a 18-th power (262144 = 2¹⁸).

The spelling of 1262143 in words is "one million, two hundred sixty-two thousand, one hundred forty-three".