1233406 has 4 divisors (see below), whose sum is σ = 1850112. Its totient is φ = 616702.

The previous prime is 1233377. The next prime is 1233409. The reversal of 1233406 is 6043321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233409) 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 as a sum of consecutive naturals, namely, 308350 + ... + 308353.

It is an arithmetic number, because the mean of its divisors is an integer number (462528).

2^1233406 is an apocalyptic number.

1233406 is a deficient number, since it is larger than the sum of its proper divisors (616706).

1233406 is an equidigital number, since it uses as much as digits as its factorization.

1233406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616705.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1233406 is about 1110.5881324776. The cubic root of 1233406 is about 107.2429336270.

Adding to 1233406 its reverse (6043321), we get a palindrome (7276727).

The spelling of 1233406 in words is "one million, two hundred thirty-three thousand, four hundred six".