1243143 has 24 divisors (see below), whose sum is σ = 2031120. Its totient is φ = 725760.

The previous prime is 1243141. The next prime is 1243147. The reversal of 1243143 is 3413421.

1243143 = 19³ + 20³ + ... + 47³.

It is not a de Polignac number, because 1243143 - 2¹ = 1243141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2655 + ... + 3087.

It is an arithmetic number, because the mean of its divisors is an integer number (84630).

2^1243143 is an apocalyptic number.

1243143 is a deficient number, since it is larger than the sum of its proper divisors (787977).

1243143 is a wasteful number, since it uses less digits than its factorization.

1243143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 476 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 1243143 is about 1114.9632280932. The cubic root of 1243143 is about 107.5244004464.

Adding to 1243143 its reverse (3413421), we get a palindrome (4656564).

The spelling of 1243143 in words is "one million, two hundred forty-three thousand, one hundred forty-three".