12287142 has 36 divisors (see below), whose sum is σ = 30970836. Its totient is φ = 3510360.

The previous prime is 12287137. The next prime is 12287147. The reversal of 12287142 is 24178221.

It is an interprime number because it is at equal distance from previous prime (12287137) and next prime (12287147).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12287147) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6084 + ... + 7847.

It is an arithmetic number, because the mean of its divisors is an integer number (860301).

Almost surely, 2^12287142 is an apocalyptic number.

12287142 is an abundant number, since it is smaller than the sum of its proper divisors (18683694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12287142 is a wasteful number, since it uses less digits than its factorization.

12287142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13953 (or 13943 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 12287142 is about 3505.3019841377. The cubic root of 12287142 is about 230.7545602469.

The spelling of 12287142 in words is "twelve million, two hundred eighty-seven thousand, one hundred forty-two".