1271138 has 16 divisors (see below), whose sum is σ = 2190240. Its totient is φ = 547200.

The previous prime is 1271129. The next prime is 1271147. The reversal of 1271138 is 8311721.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1271129) and next prime (1271147).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1103 + ... + 1938.

It is an arithmetic number, because the mean of its divisors is an integer number (136890).

2^1271138 is an apocalyptic number.

1271138 is a deficient number, since it is larger than the sum of its proper divisors (919102).

1271138 is a wasteful number, since it uses less digits than its factorization.

1271138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073.

The product of its digits is 336, while the sum is 23.

The square root of 1271138 is about 1127.4475597561. The cubic root of 1271138 is about 108.3255494736.

Adding to 1271138 its reverse (8311721), we get a palindrome (9582859).

The spelling of 1271138 in words is "one million, two hundred seventy-one thousand, one hundred thirty-eight".