1243361 has 4 divisors (see below), whose sum is σ = 1420992. Its totient is φ = 1065732.

The previous prime is 1243349. The next prime is 1243367. The reversal of 1243361 is 1633421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1633421 = 31 ⋅52691.

It is a cyclic number.

It is not a de Polignac number, because 1243361 - 2¹⁴ = 1226977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243367) 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, 88805 + ... + 88818.

It is an arithmetic number, because the mean of its divisors is an integer number (355248).

2^1243361 is an apocalyptic number.

It is an amenable number.

1243361 is a deficient number, since it is larger than the sum of its proper divisors (177631).

1243361 is an equidigital number, since it uses as much as digits as its factorization.

1243361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177630.

The product of its digits is 432, while the sum is 20.

The square root of 1243361 is about 1115.0609848793. The cubic root of 1243361 is about 107.5306853091.

Adding to 1243361 its reverse (1633421), we get a palindrome (2876782).

The spelling of 1243361 in words is "one million, two hundred forty-three thousand, three hundred sixty-one".