13402427 has 2 divisors, whose sum is σ = 13402428. Its totient is φ = 13402426.

The previous prime is 13402423. The next prime is 13402453. The reversal of 13402427 is 72420431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13402427 - 2² = 13402423 is a prime.

It is not a weakly prime, because it can be changed into another prime (13402423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6701213 + 6701214.

It is an arithmetic number, because the mean of its divisors is an integer number (6701214).

Almost surely, 2^13402427 is an apocalyptic number.

13402427 is a deficient number, since it is larger than the sum of its proper divisors (1).

13402427 is an equidigital number, since it uses as much as digits as its factorization.

13402427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 13402427 is about 3660.9325314734. The cubic root of 13402427 is about 237.5351128141.

Adding to 13402427 its reverse (72420431), we get a palindrome (85822858).

The spelling of 13402427 in words is "thirteen million, four hundred two thousand, four hundred twenty-seven".