1242243 has 16 divisors (see below), whose sum is σ = 1859200. Its totient is φ = 819720.

The previous prime is 1242233. The next prime is 1242251. The reversal of 1242243 is 3422421.

It is not a de Polignac number, because 1242243 - 2⁸ = 1241987 is a prime.

It is an Ulam number.

It is a Duffinian number.

1242243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1242233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3588 + ... + 3918.

It is an arithmetic number, because the mean of its divisors is an integer number (116200).

2^1242243 is an apocalyptic number.

1242243 is a deficient number, since it is larger than the sum of its proper divisors (616957).

1242243 is a wasteful number, since it uses less digits than its factorization.

1242243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 473 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 1242243 is about 1114.5595542635. The cubic root of 1242243 is about 107.4984459844.

Adding to 1242243 its reverse (3422421), we get a palindrome (4664664).

It can be divided in two parts, 1242 and 243, that added together give a triangular number (1485 = T₅₄).

The spelling of 1242243 in words is "one million, two hundred forty-two thousand, two hundred forty-three".