1642285 has 12 divisors (see below), whose sum is σ = 2101788. Its totient is φ = 1227648.

The previous prime is 1642283. The next prime is 1642297. The reversal of 1642285 is 5822461.

It can be written as a sum of positive squares in 2 ways, for example, as 946729 + 695556 = 973^2 + 834^2 .

It is not a de Polignac number, because 1642285 - 2¹ = 1642283 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642283) 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 11 ways as a sum of consecutive naturals, for example, 11746 + ... + 11884.

It is an arithmetic number, because the mean of its divisors is an integer number (175149).

2^1642285 is an apocalyptic number.

It is an amenable number.

1642285 is a deficient number, since it is larger than the sum of its proper divisors (459503).

1642285 is an equidigital number, since it uses as much as digits as its factorization.

1642285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 161 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 1642285 is about 1281.5166795637. The cubic root of 1642285 is about 117.9821144969.

The spelling of 1642285 in words is "one million, six hundred forty-two thousand, two hundred eighty-five".