12115742 has 4 divisors (see below), whose sum is σ = 18173616. Its totient is φ = 6057870.

The previous prime is 12115739. The next prime is 12115769. The reversal of 12115742 is 24751121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24751121 = 503 ⋅49207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3028934 + ... + 3028937.

It is an arithmetic number, because the mean of its divisors is an integer number (4543404).

Almost surely, 2^12115742 is an apocalyptic number.

12115742 is a deficient number, since it is larger than the sum of its proper divisors (6057874).

12115742 is an equidigital number, since it uses as much as digits as its factorization.

12115742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6057873.

The product of its digits is 560, while the sum is 23.

The square root of 12115742 is about 3480.7674441134. The cubic root of 12115742 is about 229.6765586008.

Adding to 12115742 its reverse (24751121), we get a palindrome (36866863).

The spelling of 12115742 in words is "twelve million, one hundred fifteen thousand, seven hundred forty-two".