1271429 has 2 divisors, whose sum is σ = 1271430. Its totient is φ = 1271428.

The previous prime is 1271419. The next prime is 1271449. The reversal of 1271429 is 9241721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1113025 + 158404 = 1055^2 + 398^2 .

It is a cyclic number.

It is not a de Polignac number, because 1271429 - 2⁸ = 1271173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1271398 and 1271407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1271419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635714 + 635715.

It is an arithmetic number, because the mean of its divisors is an integer number (635715).

2^1271429 is an apocalyptic number.

It is an amenable number.

1271429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271429 is an equidigital number, since it uses as much as digits as its factorization.

1271429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

The square root of 1271429 is about 1127.5766049364. The cubic root of 1271429 is about 108.3338151195. Note that the first 3 decimals are identical.

The spelling of 1271429 in words is "one million, two hundred seventy-one thousand, four hundred twenty-nine".