1729143 has 12 divisors (see below), whose sum is σ = 2689960. Its totient is φ = 1064016.

The previous prime is 1729141. The next prime is 1729153. The reversal of 1729143 is 3419271.

It is not a de Polignac number, because 1729143 - 2¹ = 1729141 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1729141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7273 + ... + 7506.

2^1729143 is an apocalyptic number.

1729143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1729143 is a deficient number, since it is larger than the sum of its proper divisors (960817).

1729143 is a wasteful number, since it uses less digits than its factorization.

1729143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14798 (or 14795 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1729143 is about 1314.9688209231. The cubic root of 1729143 is about 120.0264525018.

The spelling of 1729143 in words is "one million, seven hundred twenty-nine thousand, one hundred forty-three".