1730129 has 4 divisors (see below), whose sum is σ = 1805376. Its totient is φ = 1654884.

The previous prime is 1730119. The next prime is 1730147. The reversal of 1730129 is 9210371.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9210371 = 29 ⋅317599.

It is a cyclic number.

It is not a de Polignac number, because 1730129 - 2¹² = 1726033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 75223 = 1730129 / (1 + 7 + 3 + 0 + 1 + 2 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1730119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37589 + ... + 37634.

It is an arithmetic number, because the mean of its divisors is an integer number (451344).

2^1730129 is an apocalyptic number.

It is an amenable number.

1730129 is a deficient number, since it is larger than the sum of its proper divisors (75247).

1730129 is an equidigital number, since it uses as much as digits as its factorization.

1730129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75246.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1730129 is about 1315.3436813244. The cubic root of 1730129 is about 120.0492621816.

The spelling of 1730129 in words is "one million, seven hundred thirty thousand, one hundred twenty-nine".