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1443421 = 7206203
BaseRepresentation
bin101100000011001011101
32201100000001
411200121131
5332142141
650534301
715161140
oct5403135
92640001
101443421
118a6511
12597391
133b6cc5
14298057
151d7a31
hex16065d

1443421 has 4 divisors (see below), whose sum is σ = 1649632. Its totient is φ = 1237212.

The previous prime is 1443401. The next prime is 1443427. The reversal of 1443421 is 1243441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1243441 = 3140111.

It is a cyclic number.

It is not a de Polignac number, because 1443421 - 25 = 1443389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103095 + ... + 103108.

It is an arithmetic number, because the mean of its divisors is an integer number (412408).

21443421 is an apocalyptic number.

It is an amenable number.

1443421 is a deficient number, since it is larger than the sum of its proper divisors (206211).

1443421 is an equidigital number, since it uses as much as digits as its factorization.

1443421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206210.

The product of its digits is 384, while the sum is 19.

The square root of 1443421 is about 1201.4245710822. The cubic root of 1443421 is about 113.0136773065.

Adding to 1443421 its reverse (1243441), we get a palindrome (2686862).

The spelling of 1443421 in words is "one million, four hundred forty-three thousand, four hundred twenty-one".

Divisors: 1 7 206203 1443421