12742407 has 32 divisors (see below), whose sum is σ = 20256000. Its totient is φ = 7892640.

The previous prime is 12742399. The next prime is 12742417. The reversal of 12742407 is 70424721.

It is a happy number.

12742407 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 12742407 - 2³ = 12742399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12742417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30057 + ... + 30477.

It is an arithmetic number, because the mean of its divisors is an integer number (633000).

Almost surely, 2^12742407 is an apocalyptic number.

12742407 is a deficient number, since it is larger than the sum of its proper divisors (7513593).

12742407 is a wasteful number, since it uses less digits than its factorization.

12742407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 12742407 is about 3569.6508232599. The cubic root of 12742407 is about 233.5700520558.

The spelling of 12742407 in words is "twelve million, seven hundred forty-two thousand, four hundred seven".