12142199 has 4 divisors (see below), whose sum is σ = 12856464. Its totient is φ = 11427936.

The previous prime is 12142177. The next prime is 12142217. The reversal of 12142199 is 99124121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99124121 = 19 ⋅5217059.

It is a cyclic number.

It is not a de Polignac number, because 12142199 - 2¹² = 12138103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357107 + ... + 357140.

It is an arithmetic number, because the mean of its divisors is an integer number (3214116).

Almost surely, 2^12142199 is an apocalyptic number.

12142199 is a deficient number, since it is larger than the sum of its proper divisors (714265).

12142199 is an equidigital number, since it uses as much as digits as its factorization.

12142199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714264.

The product of its digits is 1296, while the sum is 29.

The square root of 12142199 is about 3484.5658266131. The cubic root of 12142199 is about 229.8436177037.

The spelling of 12142199 in words is "twelve million, one hundred forty-two thousand, one hundred ninety-nine".