12542142 has 8 divisors (see below), whose sum is σ = 25084296. Its totient is φ = 4180712.

The previous prime is 12542137. The next prime is 12542143. The reversal of 12542142 is 24124521.

It is a sphenic number, since it is the product of 3 distinct primes.

12542142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542143) 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, 1045173 + ... + 1045184.

It is an arithmetic number, because the mean of its divisors is an integer number (3135537).

Almost surely, 2^12542142 is an apocalyptic number.

12542142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12542142 is a wasteful number, since it uses less digits than its factorization.

12542142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090362.

The product of its digits is 640, while the sum is 21.

The square root of 12542142 is about 3541.4886700369. The cubic root of 12542142 is about 232.3399569182.

Adding to 12542142 its reverse (24124521), we get a palindrome (36666663).

The spelling of 12542142 in words is "twelve million, five hundred forty-two thousand, one hundred forty-two".