1427400727 has 2 divisors, whose sum is σ = 1427400728. Its totient is φ = 1427400726.

The previous prime is 1427400719. The next prime is 1427400731. The reversal of 1427400727 is 7270047241.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7270047241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1427400727 - 2³ = 1427400719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1427400692 and 1427400701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1427407727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713700363 + 713700364.

It is an arithmetic number, because the mean of its divisors is an integer number (713700364).

Almost surely, 2^1427400727 is an apocalyptic number.

1427400727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427400727 is an equidigital number, since it uses as much as digits as its factorization.

1427400727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21952, while the sum is 34.

The square root of 1427400727 is about 37780.9572006851. The cubic root of 1427400727 is about 1125.9401463284.

Adding to 1427400727 its reverse (7270047241), we get a palindrome (8697447968).

The spelling of 1427400727 in words is "one billion, four hundred twenty-seven million, four hundred thousand, seven hundred twenty-seven".