1742123 has 4 divisors (see below), whose sum is σ = 1746240. Its totient is φ = 1738008.

The previous prime is 1742101. The next prime is 1742161. The reversal of 1742123 is 3212471.

1742123 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1742123 - 2¹⁰ = 1741099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1742095 and 1742104.

It is not an unprimeable number, because it can be changed into a prime (1742173) 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 in 3 ways as a sum of consecutive naturals, for example, 1340 + ... + 2297.

It is an arithmetic number, because the mean of its divisors is an integer number (436560).

2^1742123 is an apocalyptic number.

1742123 is a deficient number, since it is larger than the sum of its proper divisors (4117).

1742123 is an equidigital number, since it uses as much as digits as its factorization.

1742123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116.

The product of its digits is 336, while the sum is 20.

The square root of 1742123 is about 1319.8950715871. The cubic root of 1742123 is about 120.3260346723.

Adding to 1742123 its reverse (3212471), we get a palindrome (4954594).

The spelling of 1742123 in words is "one million, seven hundred forty-two thousand, one hundred twenty-three".