1271398 has 8 divisors (see below), whose sum is σ = 1912608. Its totient is φ = 633864.

The previous prime is 1271393. The next prime is 1271399. The reversal of 1271398 is 8931721.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271393) 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 in 3 ways as a sum of consecutive naturals, for example, 240 + ... + 1612.

It is an arithmetic number, because the mean of its divisors is an integer number (239076).

2^1271398 is an apocalyptic number.

1271398 is a deficient number, since it is larger than the sum of its proper divisors (641210).

1271398 is a wasteful number, since it uses less digits than its factorization.

1271398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838.

The product of its digits is 3024, while the sum is 31.

The square root of 1271398 is about 1127.5628585582. The cubic root of 1271398 is about 108.3329346468.

The spelling of 1271398 in words is "one million, two hundred seventy-one thousand, three hundred ninety-eight".