1242253 has 4 divisors (see below), whose sum is σ = 1296288. Its totient is φ = 1188220.

The previous prime is 1242251. The next prime is 1242271. The reversal of 1242253 is 3522421.

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 1242253 - 2¹ = 1242251 is a prime.

It is a d-powerful number, because it can be written as 1 + 2⁴ + 4 + 2¹⁴ + 2²⁰ + 5³ + 3¹¹ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242251) 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, 26983 + ... + 27028.

It is an arithmetic number, because the mean of its divisors is an integer number (324072).

2^1242253 is an apocalyptic number.

It is an amenable number.

1242253 is a deficient number, since it is larger than the sum of its proper divisors (54035).

1242253 is an equidigital number, since it uses as much as digits as its factorization.

1242253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54034.

The product of its digits is 480, while the sum is 19.

The square root of 1242253 is about 1114.5640403315. The cubic root of 1242253 is about 107.4987344362.

Adding to 1242253 its reverse (3522421), we get a palindrome (4764674).

The spelling of 1242253 in words is "one million, two hundred forty-two thousand, two hundred fifty-three".