1742605 has 8 divisors (see below), whose sum is σ = 2113272. Its totient is φ = 1379328.

The previous prime is 1742593. The next prime is 1742617. The reversal of 1742605 is 5062471.

It is an interprime number because it is at equal distance from previous prime (1742593) and next prime (1742617).

It can be written as a sum of positive squares in 4 ways, for example, as 70756 + 1671849 = 266^2 + 1293^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1742605 - 2¹⁵ = 1709837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1742605.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1312 + ... + 2281.

It is an arithmetic number, because the mean of its divisors is an integer number (264159).

2^1742605 is an apocalyptic number.

It is an amenable number.

1742605 is a deficient number, since it is larger than the sum of its proper divisors (370667).

1742605 is an equidigital number, since it uses as much as digits as its factorization.

1742605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1742605 is about 1320.0776492313. The cubic root of 1742605 is about 120.3371306743.

The spelling of 1742605 in words is "one million, seven hundred forty-two thousand, six hundred five".