1271272 has 8 divisors (see below), whose sum is σ = 2383650. Its totient is φ = 635632.

The previous prime is 1271251. The next prime is 1271293. The reversal of 1271272 is 2721721.

It is an interprime number because it is at equal distance from previous prime (1271251) and next prime (1271293).

It can be written as a sum of positive squares in only one way, i.e., 1240996 + 30276 = 1114^2 + 174^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1271272² = 3232264995968, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 79447 + ... + 79462.

2^1271272 is an apocalyptic number.

It is an amenable number.

1271272 is a deficient number, since it is larger than the sum of its proper divisors (1112378).

1271272 is a wasteful number, since it uses less digits than its factorization.

1271272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158915 (or 158911 counting only the distinct ones).

The product of its digits is 392, while the sum is 22.

The square root of 1271272 is about 1127.5069844573. The cubic root of 1271272 is about 108.3293558040.

Adding to 1271272 its reverse (2721721), we get a palindrome (3992993).

The spelling of 1271272 in words is "one million, two hundred seventy-one thousand, two hundred seventy-two".