12345907 has 4 divisors (see below), whose sum is σ = 14109616. Its totient is φ = 10582200.

The previous prime is 12345899. The next prime is 12345923. The reversal of 12345907 is 70954321.

12345907 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70954321 = 73 ⋅971977.

It is a cyclic number.

It is not a de Polignac number, because 12345907 - 2³ = 12345899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12340907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881844 + ... + 881857.

It is an arithmetic number, because the mean of its divisors is an integer number (3527404).

Almost surely, 2^12345907 is an apocalyptic number.

12345907 is a deficient number, since it is larger than the sum of its proper divisors (1763709).

12345907 is an equidigital number, since it uses as much as digits as its factorization.

12345907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763708.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 12345907 is about 3513.6742876937. The cubic root of 12345907 is about 231.1218474751.

The spelling of 12345907 in words is "twelve million, three hundred forty-five thousand, nine hundred seven".