12740143 has 8 divisors (see below), whose sum is σ = 13826736. Its totient is φ = 11668800.

The previous prime is 12740129. The next prime is 12740153. The reversal of 12740143 is 34104721.

12740143 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 not a de Polignac number, because 12740143 - 2⁵ = 12740111 is a prime.

It is a super-2 number, since 2×12740143² = 324622487320898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12740113) 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, 2038 + ... + 5443.

It is an arithmetic number, because the mean of its divisors is an integer number (1728342).

Almost surely, 2^12740143 is an apocalyptic number.

12740143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12740143 is a deficient number, since it is larger than the sum of its proper divisors (1086593).

12740143 is a wasteful number, since it uses less digits than its factorization.

12740143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7625.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 12740143 is about 3569.3336913211. Note that the first 3 decimals coincide. The cubic root of 12740143 is about 233.5562180939.

Adding to 12740143 its reverse (34104721), we get a palindrome (46844864).

The spelling of 12740143 in words is "twelve million, seven hundred forty thousand, one hundred forty-three".