7881243 has 16 divisors (see below), whose sum is σ = 10958880. Its totient is φ = 5031936.

The previous prime is 7881241. The next prime is 7881253. The reversal of 7881243 is 3421887.

7881243 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7881243 - 2¹ = 7881241 is a prime.

It is a super-2 number, since 2×7881243² = 124227982450098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7881241) 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, 13371 + ... + 13947.

It is an arithmetic number, because the mean of its divisors is an integer number (684930).

Almost surely, 2^7881243 is an apocalyptic number.

7881243 is a deficient number, since it is larger than the sum of its proper divisors (3077637).

7881243 is a wasteful number, since it uses less digits than its factorization.

7881243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766.

The product of its digits is 10752, while the sum is 33.

The square root of 7881243 is about 2807.3551610012. The cubic root of 7881243 is about 199.0054205909.

The spelling of 7881243 in words is "seven million, eight hundred eighty-one thousand, two hundred forty-three".