12142747 has 8 divisors (see below), whose sum is σ = 12390560. Its totient is φ = 11897280.

The previous prime is 12142733. The next prime is 12142759. The reversal of 12142747 is 74724121.

12142747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12142747 - 2²³ = 3754139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12142717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12754 + ... + 13672.

It is an arithmetic number, because the mean of its divisors is an integer number (1548820).

Almost surely, 2^12142747 is an apocalyptic number.

12142747 is a deficient number, since it is larger than the sum of its proper divisors (247813).

12142747 is an equidigital number, since it uses as much as digits as its factorization.

12142747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173.

The product of its digits is 3136, while the sum is 28.

The square root of 12142747 is about 3484.6444581908. The cubic root of 12142747 is about 229.8470754082.

Adding to 12142747 its reverse (74724121), we get a palindrome (86866868).

The spelling of 12142747 in words is "twelve million, one hundred forty-two thousand, seven hundred forty-seven".