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3000421 = 4173181
BaseRepresentation
bin1011011100100001100101
312122102210201
423130201211
51232003141
6144150501
734334404
oct13344145
95572721
103000421
11176a296
121008431
138108c8
1458163b
153e4031
hex2dc865

3000421 has 4 divisors (see below), whose sum is σ = 3073644. Its totient is φ = 2927200.

The previous prime is 3000409. The next prime is 3000463. The reversal of 3000421 is 1240003.

3000421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1240003 = 5921017.

It can be written as a sum of positive squares in 2 ways, for example, as 408321 + 2592100 = 639^2 + 1610^2 .

It is a cyclic number.

It is not a de Polignac number, because 3000421 - 213 = 2992229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3000398 and 3000407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3000821) 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, 36550 + ... + 36631.

It is an arithmetic number, because the mean of its divisors is an integer number (768411).

Almost surely, 23000421 is an apocalyptic number.

It is an amenable number.

3000421 is a deficient number, since it is larger than the sum of its proper divisors (73223).

3000421 is an equidigital number, since it uses as much as digits as its factorization.

3000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73222.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 3000421 is about 1732.1723355371. The cubic root of 3000421 is about 144.2317032382.

Adding to 3000421 its reverse (1240003), we get a palindrome (4240424).

The spelling of 3000421 in words is "three million, four hundred twenty-one", and thus it is an aban number.

Divisors: 1 41 73181 3000421