1003642 has 4 divisors (see below), whose sum is σ = 1505466. Its totient is φ = 501820.

The previous prime is 1003631. The next prime is 1003679. The reversal of 1003642 is 2463001.

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

It can be written as a sum of positive squares in only one way, i.e., 900601 + 103041 = 949^2 + 321^2 .

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 as a sum of consecutive naturals, namely, 250909 + ... + 250912.

2^1003642 is an apocalyptic number.

1003642 is a deficient number, since it is larger than the sum of its proper divisors (501824).

1003642 is an equidigital number, since it uses as much as digits as its factorization.

1003642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501823.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1003642 is about 1001.8193449919. The cubic root of 1003642 is about 100.1212529179.

Adding to 1003642 its reverse (2463001), we get a palindrome (3466643).

The spelling of 1003642 in words is "one million, three thousand, six hundred forty-two".