1872243 has 12 divisors (see below), whose sum is σ = 2717728. Its totient is φ = 1242000.

The previous prime is 1872239. The next prime is 1872253. The reversal of 1872243 is 3422781.

It is not a de Polignac number, because 1872243 - 2² = 1872239 is a prime.

It is a d-powerful number, because it can be written as 1 + 8 + 7⁷ + 2 + 2⁵ + 4¹⁰ + 3⁴ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1872253) 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 11 ways as a sum of consecutive naturals, for example, 2118 + ... + 2868.

2^1872243 is an apocalyptic number.

1872243 is a deficient number, since it is larger than the sum of its proper divisors (845485).

1872243 is a wasteful number, since it uses less digits than its factorization.

1872243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034 (or 1031 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 1872243 is about 1368.2993093618. The cubic root of 1872243 is about 123.2501354321.

The spelling of 1872243 in words is "one million, eight hundred seventy-two thousand, two hundred forty-three".