12142099 has 4 divisors (see below), whose sum is σ = 12153640. Its totient is φ = 12130560.

The previous prime is 12142093. The next prime is 12142103. The reversal of 12142099 is 99024121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99024121 = 7 ⋅14146303.

It is a cyclic number.

It is not a de Polignac number, because 12142099 - 2⁷ = 12141971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12142093) 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 3 ways as a sum of consecutive naturals, for example, 4014 + ... + 6355.

It is an arithmetic number, because the mean of its divisors is an integer number (3038410).

Almost surely, 2^12142099 is an apocalyptic number.

12142099 is a deficient number, since it is larger than the sum of its proper divisors (11541).

12142099 is a wasteful number, since it uses less digits than its factorization.

12142099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11540.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 12142099 is about 3484.5514775936. The cubic root of 12142099 is about 229.8429867245.

The spelling of 12142099 in words is "twelve million, one hundred forty-two thousand, ninety-nine".