1271216 has 10 divisors (see below), whose sum is σ = 2463012. Its totient is φ = 635600.

The previous prime is 1271213. The next prime is 1271227. The reversal of 1271216 is 6121721.

It is a pancake number, because a pancake can be divided into 1271216 parts by 1594 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (1271213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39710 + ... + 39741.

2^1271216 is an apocalyptic number.

1271216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1271216 is a deficient number, since it is larger than the sum of its proper divisors (1191796).

1271216 is an equidigital number, since it uses as much as digits as its factorization.

1271216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79459 (or 79453 counting only the distinct ones).

The product of its digits is 168, while the sum is 20.

The square root of 1271216 is about 1127.4821506348. The cubic root of 1271216 is about 108.3277651313.

Adding to 1271216 its reverse (6121721), we get a palindrome (7392937).

The spelling of 1271216 in words is "one million, two hundred seventy-one thousand, two hundred sixteen".