12745742 has 8 divisors (see below), whose sum is σ = 19525536. Its totient is φ = 6237232.

The previous prime is 12745739. The next prime is 12745753. The reversal of 12745742 is 24754721.

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

It is a junction number, because it is equal to n+sod(n) for n = 12745699 and 12745708.

It is a congruent number.

It is an unprimeable number.

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, 67703 + ... + 67890.

It is an arithmetic number, because the mean of its divisors is an integer number (2440692).

Almost surely, 2^12745742 is an apocalyptic number.

12745742 is a deficient number, since it is larger than the sum of its proper divisors (6779794).

12745742 is a wasteful number, since it uses less digits than its factorization.

12745742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135642.

The product of its digits is 15680, while the sum is 32.

The square root of 12745742 is about 3570.1179252232. The cubic root of 12745742 is about 233.5904272794.

The spelling of 12745742 in words is "twelve million, seven hundred forty-five thousand, seven hundred forty-two".