1200455 has 16 divisors (see below), whose sum is σ = 1581120. Its totient is φ = 870912.

The previous prime is 1200449. The next prime is 1200461. The reversal of 1200455 is 5540021.

It is an interprime number because it is at equal distance from previous prime (1200449) and next prime (1200461).

It is a cyclic number.

It is not a de Polignac number, because 1200455 - 2¹² = 1196359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2222 + ... + 2708.

It is an arithmetic number, because the mean of its divisors is an integer number (98820).

2^1200455 is an apocalyptic number.

1200455 is a deficient number, since it is larger than the sum of its proper divisors (380665).

1200455 is a wasteful number, since it uses less digits than its factorization.

1200455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1200455 is about 1095.6527734643. The cubic root of 1200455 is about 106.2792860447.

Adding to 1200455 its reverse (5540021), we get a palindrome (6740476).

The spelling of 1200455 in words is "one million, two hundred thousand, four hundred fifty-five".