1200453 has 4 divisors (see below), whose sum is σ = 1600608. Its totient is φ = 800300.

The previous prime is 1200449. The next prime is 1200461. The reversal of 1200453 is 3540021.

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 1200453 - 2² = 1200449 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200073 + ... + 200078.

It is an arithmetic number, because the mean of its divisors is an integer number (400152).

2^1200453 is an apocalyptic number.

It is an amenable number.

1200453 is a deficient number, since it is larger than the sum of its proper divisors (400155).

1200453 is an equidigital number, since it uses as much as digits as its factorization.

1200453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400154.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1200453 is about 1095.6518607660. The cubic root of 1200453 is about 106.2792270230.

Adding to 1200453 its reverse (3540021), we get a palindrome (4740474).

It can be divided in two parts, 1200 and 453, that added together give a triangular number (1653 = T₅₇).

The spelling of 1200453 in words is "one million, two hundred thousand, four hundred fifty-three".