1271878 has 4 divisors (see below), whose sum is σ = 1907820. Its totient is φ = 635938.

The previous prime is 1271849. The next prime is 1271903. The reversal of 1271878 is 8781721.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317968 + ... + 317971.

It is an arithmetic number, because the mean of its divisors is an integer number (476955).

2^1271878 is an apocalyptic number.

1271878 is a deficient number, since it is larger than the sum of its proper divisors (635942).

1271878 is an equidigital number, since it uses as much as digits as its factorization.

1271878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635941.

The product of its digits is 6272, while the sum is 34.

The square root of 1271878 is about 1127.7756869165. The cubic root of 1271878 is about 108.3465661679.

The spelling of 1271878 in words is "one million, two hundred seventy-one thousand, eight hundred seventy-eight".