12287842 has 32 divisors (see below), whose sum is σ = 22708224. Its totient is φ = 4870800.

The previous prime is 12287837. The next prime is 12287861. The reversal of 12287842 is 24878221.

It is a super-2 number, since 2×12287842² = 301982122033928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12287798 and 12287807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9367 + ... + 10597.

It is an arithmetic number, because the mean of its divisors is an integer number (709632).

Almost surely, 2^12287842 is an apocalyptic number.

12287842 is a deficient number, since it is larger than the sum of its proper divisors (10420382).

12287842 is a wasteful number, since it uses less digits than its factorization.

12287842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294.

The product of its digits is 14336, while the sum is 34.

The square root of 12287842 is about 3505.4018314596. The cubic root of 12287842 is about 230.7589422023.

The spelling of 12287842 in words is "twelve million, two hundred eighty-seven thousand, eight hundred forty-two".