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1000023 = 3333341
BaseRepresentation
bin11110100001001010111
31212210202220
43310021113
5224000043
633233423
711333343
oct3641127
91783686
101000023
11623372
12402873
1329023b
141c0623
1514b483
hexf4257

1000023 has 4 divisors (see below), whose sum is σ = 1333368. Its totient is φ = 666680.

The previous prime is 1000003. The next prime is 1000033. The reversal of 1000023 is 3200001.

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 1000023 - 26 = 999959 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 999975 and 1000020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000003) 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, 166668 + ... + 166673.

It is an arithmetic number, because the mean of its divisors is an integer number (333342).

21000023 is an apocalyptic number.

1000023 is a deficient number, since it is larger than the sum of its proper divisors (333345).

1000023 is an equidigital number, since it uses as much as digits as its factorization.

1000023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333344.

The product of its (nonzero) digits is 6, while the sum is 6.

The square root of 1000023 is about 1000.0114999339. The cubic root of 1000023 is about 100.0007666608. Note that the first 3 decimals are identical.

Adding to 1000023 its reverse (3200001), we get a palindrome (4200024).

The spelling of 1000023 in words is "one million, twenty-three", and thus it is an aban number and an uban number.

Divisors: 1 3 333341 1000023