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1234421 = 1772613
BaseRepresentation
bin100101101010111110101
32022201022022
410231113311
5304000141
642242525
713330616
oct4552765
92281268
101234421
11773491
124b6445
13342b36
14241c0d
15195b4b
hex12d5f5

1234421 has 4 divisors (see below), whose sum is σ = 1307052. Its totient is φ = 1161792.

The previous prime is 1234417. The next prime is 1234439. The reversal of 1234421 is 1244321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1244321 = 1395717.

It can be written as a sum of positive squares in 2 ways, for example, as 970225 + 264196 = 985^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234421 - 22 = 1234417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 72613 = 1234421 / (1 + 2 + 3 + 4 + 4 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1234421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234721) 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, 36290 + ... + 36323.

It is an arithmetic number, because the mean of its divisors is an integer number (326763).

21234421 is an apocalyptic number.

It is an amenable number.

1234421 is a deficient number, since it is larger than the sum of its proper divisors (72631).

1234421 is an equidigital number, since it uses as much as digits as its factorization.

1234421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72630.

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

The square root of 1234421 is about 1111.0450035890. The cubic root of 1234421 is about 107.2723431733.

Adding to 1234421 its reverse (1244321), we get a palindrome (2478742).

The spelling of 1234421 in words is "one million, two hundred thirty-four thousand, four hundred twenty-one".

Divisors: 1 17 72613 1234421