1271427 has 8 divisors (see below), whose sum is σ = 1703616. Its totient is φ = 843432.

The previous prime is 1271419. The next prime is 1271429. The reversal of 1271427 is 7241721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1271427 - 2³ = 1271419 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1271397 and 1271406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253 + ... + 1614.

It is an arithmetic number, because the mean of its divisors is an integer number (212952).

2^1271427 is an apocalyptic number.

1271427 is a deficient number, since it is larger than the sum of its proper divisors (432189).

1271427 is a wasteful number, since it uses less digits than its factorization.

1271427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097.

The product of its digits is 784, while the sum is 24.

The square root of 1271427 is about 1127.5757180784. The cubic root of 1271427 is about 108.3337583152. Note that the first 3 decimals are identical.

The spelling of 1271427 in words is "one million, two hundred seventy-one thousand, four hundred twenty-seven".