12740007 has 16 divisors (see below), whose sum is σ = 19498752. Its totient is φ = 7248000.

The previous prime is 12740003. The next prime is 12740017. The reversal of 12740007 is 70004721.

12740007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12740007 - 2² = 12740003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12740003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4063 + ... + 6479.

It is an arithmetic number, because the mean of its divisors is an integer number (1218672).

Almost surely, 2^12740007 is an apocalyptic number.

12740007 is a deficient number, since it is larger than the sum of its proper divisors (6758745).

12740007 is a wasteful number, since it uses less digits than its factorization.

12740007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 12740007 is about 3569.3146400955. The cubic root of 12740007 is about 233.5553870263. Note that the first 3 decimals are identical.

Adding to 12740007 its reverse (70004721), we get a palindrome (82744728).

The spelling of 12740007 in words is "twelve million, seven hundred forty thousand, seven".