1230055 has 4 divisors (see below), whose sum is σ = 1476072. Its totient is φ = 984040.

The previous prime is 1230029. The next prime is 1230067. The reversal of 1230055 is 5500321.

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

It is not a de Polignac number, because 1230055 - 2⁵ = 1230023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123001 + ... + 123010.

It is an arithmetic number, because the mean of its divisors is an integer number (369018).

2^1230055 is an apocalyptic number.

1230055 is a deficient number, since it is larger than the sum of its proper divisors (246017).

1230055 is an equidigital number, since it uses as much as digits as its factorization.

1230055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246016.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 1230055 is about 1109.0784462787. The cubic root of 1230055 is about 107.1457239445.

Adding to 1230055 its reverse (5500321), we get a palindrome (6730376).

The spelling of 1230055 in words is "one million, two hundred thirty thousand, fifty-five".