1203456 has 36 divisors (see below), whose sum is σ = 3204992. Its totient is φ = 400896.

The previous prime is 1203443. The next prime is 1203457. The reversal of 1203456 is 6543021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16 + ... + 1551.

2^1203456 is an apocalyptic number.

1203456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1203456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1602496).

1203456 is an abundant number, since it is smaller than the sum of its proper divisors (2001536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1203456 is an equidigital number, since it uses as much as digits as its factorization.

1203456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1203456 is about 1097.0214218510. The cubic root of 1203456 is about 106.3677743627.

Adding to 1203456 its reverse (6543021), we get a palindrome (7746477).

It can be divided in two parts, 12034 and 56, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 1203456 in words is "one million, two hundred three thousand, four hundred fifty-six".