12437427 has 4 divisors (see below), whose sum is σ = 16583240. Its totient is φ = 8291616.

The previous prime is 12437423. The next prime is 12437429. The reversal of 12437427 is 72473421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72473421 = 3 ⋅24157807.

It is not a de Polignac number, because 12437427 - 2² = 12437423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12437394 and 12437403.

It is not an unprimeable number, because it can be changed into a prime (12437423) 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, 2072902 + ... + 2072907.

It is an arithmetic number, because the mean of its divisors is an integer number (4145810).

Almost surely, 2^12437427 is an apocalyptic number.

12437427 is a deficient number, since it is larger than the sum of its proper divisors (4145813).

12437427 is an equidigital number, since it uses as much as digits as its factorization.

12437427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4145812.

The product of its digits is 9408, while the sum is 30.

The square root of 12437427 is about 3526.6736452357. The cubic root of 12437427 is about 231.6915428549.

The spelling of 12437427 in words is "twelve million, four hundred thirty-seven thousand, four hundred twenty-seven".