13120427 has 2 divisors, whose sum is σ = 13120428. Its totient is φ = 13120426.

The previous prime is 13120423. The next prime is 13120483. The reversal of 13120427 is 72402131.

13120427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (72402131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13120427 - 2² = 13120423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13120399 and 13120408.

It is not a weakly prime, because it can be changed into another prime (13120423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560213 + 6560214.

It is an arithmetic number, because the mean of its divisors is an integer number (6560214).

Almost surely, 2^13120427 is an apocalyptic number.

13120427 is a deficient number, since it is larger than the sum of its proper divisors (1).

13120427 is an equidigital number, since it uses as much as digits as its factorization.

13120427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 13120427 is about 3622.2129976024. The cubic root of 13120427 is about 235.8573002594.

Adding to 13120427 its reverse (72402131), we get a palindrome (85522558).

The spelling of 13120427 in words is "thirteen million, one hundred twenty thousand, four hundred twenty-seven".