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1420013 = 7202859
BaseRepresentation
bin101011010101011101101
32200010220002
411122223231
5330420023
650234045
715032660
oct5325355
92603802
101420013
1188a971
12585925
133a945a
1428d6d7
151d0b28
hex15aaed

1420013 has 4 divisors (see below), whose sum is σ = 1622880. Its totient is φ = 1217148.

The previous prime is 1420009. The next prime is 1420031. The reversal of 1420013 is 3100241.

It is a happy number.

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: 3100241 = 8233767.

It is a cyclic number.

It is not a de Polignac number, because 1420013 - 22 = 1420009 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1419976 and 1420003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101423 + ... + 101436.

It is an arithmetic number, because the mean of its divisors is an integer number (405720).

21420013 is an apocalyptic number.

It is an amenable number.

1420013 is a deficient number, since it is larger than the sum of its proper divisors (202867).

1420013 is an equidigital number, since it uses as much as digits as its factorization.

1420013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202866.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1420013 is about 1191.6429834476. The cubic root of 1420013 is about 112.3994294623.

Adding to 1420013 its reverse (3100241), we get a palindrome (4520254).

The spelling of 1420013 in words is "one million, four hundred twenty thousand, thirteen".

Divisors: 1 7 202859 1420013