1271994 has 16 divisors (see below), whose sum is σ = 2570400. Its totient is φ = 419600.

The previous prime is 1271987. The next prime is 1271999. The reversal of 1271994 is 4991721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271999) 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 7 ways as a sum of consecutive naturals, for example, 444 + ... + 1655.

It is an arithmetic number, because the mean of its divisors is an integer number (160650).

2^1271994 is an apocalyptic number.

1271994 is an abundant number, since it is smaller than the sum of its proper divisors (1298406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1271994 is a wasteful number, since it uses less digits than its factorization.

1271994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205.

The product of its digits is 4536, while the sum is 33.

The square root of 1271994 is about 1127.8271144107. The cubic root of 1271994 is about 108.3498599376.

The spelling of 1271994 in words is "one million, two hundred seventy-one thousand, nine hundred ninety-four".