1002023 has 8 divisors (see below), whose sum is σ = 1109376. Its totient is φ = 897400.
The previous prime is 1002017. The next prime is 1002049. The reversal of 1002023 is 3202001.
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 1002023 - 210 = 1000999 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 1002023.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1002073) 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 7 ways as a sum of consecutive naturals, for example, 140 + ... + 1422.
It is an arithmetic number, because the mean of its divisors is an integer number (138672).
21002023 is an apocalyptic number.
1002023 is a deficient number, since it is larger than the sum of its proper divisors (107353).
1002023 is a wasteful number, since it uses less digits than its factorization.
1002023 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1365.
The product of its (nonzero) digits is 12, while the sum is 8.
The square root of 1002023 is about 1001.0109889507. The cubic root of 1002023 is about 100.0673879118.
Adding to 1002023 its reverse (3202001), we get a palindrome (4204024).
The spelling of 1002023 in words is "one million, two thousand, twenty-three".
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