Search a number
-
+
1042213 = 4632251
BaseRepresentation
bin11111110011100100101
31221221122111
43332130211
5231322323
634201021
711600344
oct3763445
91857574
101042213
11652037
12423171
132a64c3
141d1b5b
15158c0d
hexfe725

1042213 has 4 divisors (see below), whose sum is σ = 1044928. Its totient is φ = 1039500.

The previous prime is 1042211. The next prime is 1042241. The reversal of 1042213 is 3122401.

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 1042213 - 21 = 1042211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1042193 and 1042202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042211) 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, 663 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (261232).

21042213 is an apocalyptic number.

It is an amenable number.

1042213 is a deficient number, since it is larger than the sum of its proper divisors (2715).

1042213 is an equidigital number, since it uses as much as digits as its factorization.

1042213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1042213 is about 1020.8883386541. Note that the first 3 decimals coincide. The cubic root of 1042213 is about 101.3877523472.

Adding to 1042213 its reverse (3122401), we get a palindrome (4164614).

The spelling of 1042213 in words is "one million, forty-two thousand, two hundred thirteen".

Divisors: 1 463 2251 1042213