1729042671 has 16 divisors (see below), whose sum is σ = 2370519648. Its totient is φ = 1120204800.

The previous prime is 1729042649. The next prime is 1729042697. The reversal of 1729042671 is 1762409271.

It is not a de Polignac number, because 1729042671 - 2⁶ = 1729042607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1729040671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88951 + ... + 106631.

It is an arithmetic number, because the mean of its divisors is an integer number (148157478).

Almost surely, 2^1729042671 is an apocalyptic number.

1729042671 is a deficient number, since it is larger than the sum of its proper divisors (641476977).

1729042671 is a wasteful number, since it uses less digits than its factorization.

1729042671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18602.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 1729042671 is about 41581.7588733329. The cubic root of 1729042671 is about 1200.2413104989.

The spelling of 1729042671 in words is "one billion, seven hundred twenty-nine million, forty-two thousand, six hundred seventy-one".