1233421 has 16 divisors (see below), whose sum is σ = 1511424. Its totient is φ = 983664.

The previous prime is 1233409. The next prime is 1233431. The reversal of 1233421 is 1243321.

It is a happy number.

It is not a de Polignac number, because 1233421 - 2⁹ = 1232909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1233395 and 1233404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7486 + ... + 7648.

It is an arithmetic number, because the mean of its divisors is an integer number (94464).

2^1233421 is an apocalyptic number.

It is an amenable number.

1233421 is a deficient number, since it is larger than the sum of its proper divisors (278003).

1233421 is a wasteful number, since it uses less digits than its factorization.

1233421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240.

The product of its digits is 144, while the sum is 16.

The square root of 1233421 is about 1110.5948856356. The cubic root of 1233421 is about 107.2433683683.

Adding to 1233421 its reverse (1243321), we get a palindrome (2476742).

It can be divided in two parts, 12 and 33421, that added together give a palindrome (33433).

The spelling of 1233421 in words is "one million, two hundred thirty-three thousand, four hundred twenty-one".