1255243 has 4 divisors (see below), whose sum is σ = 1369368. Its totient is φ = 1141120.

The previous prime is 1255237. The next prime is 1255249. The reversal of 1255243 is 3425521.

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

It is an interprime number because it is at equal distance from previous prime (1255237) and next prime (1255249).

It is a cyclic number.

It is not a de Polignac number, because 1255243 - 2⁵ = 1255211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255249) by changing a digit.

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, 57046 + ... + 57067.

It is an arithmetic number, because the mean of its divisors is an integer number (342342).

2^1255243 is an apocalyptic number.

1255243 is a deficient number, since it is larger than the sum of its proper divisors (114125).

1255243 is a wasteful number, since it uses less digits than its factorization.

1255243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114124.

The product of its digits is 1200, while the sum is 22.

The square root of 1255243 is about 1120.3762760787. The cubic root of 1255243 is about 107.8721337667.

It can be divided in two parts, 12 and 55243, that added together give a palindrome (55255).

The spelling of 1255243 in words is "one million, two hundred fifty-five thousand, two hundred forty-three".