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1424213 = 7203459

1424213 has 4 divisors (see below), whose sum is σ = 1627680. Its totient is φ = 1220748.

The previous prime is 1424191. The next prime is 1424231. The reversal of 1424213 is 3124241.

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.

It is a cyclic number.

It is not a de Polignac number, because 1424213 - 26 = 1424149 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1424191 and 1424200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424263) 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, 101723 + ... + 101736.

It is an arithmetic number, because the mean of its divisors is an integer number (406920).

21424213 is an apocalyptic number.

It is an amenable number.

1424213 is a deficient number, since it is larger than the sum of its proper divisors (203467).

1424213 is an equidigital number, since it uses as much as digits as its factorization.

1424213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203466.

The product of its digits is 192, while the sum is 17.

The square root of 1424213 is about 1193.4039550798. The cubic root of 1424213 is about 112.5101357123.

Adding to 1424213 its reverse (3124241), we get a palindrome (4548454).

The spelling of 1424213 in words is "one million, four hundred twenty-four thousand, two hundred thirteen".

Divisors: 1 7 203459 1424213