1271842 has 16 divisors (see below), whose sum is σ = 2241792. Its totient is φ = 533520.

The previous prime is 1271839. The next prime is 1271843. The reversal of 1271842 is 2481721.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1271843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1938 + ... + 2509.

It is an arithmetic number, because the mean of its divisors is an integer number (140112).

2^1271842 is an apocalyptic number.

1271842 is a deficient number, since it is larger than the sum of its proper divisors (969950).

1271842 is a wasteful number, since it uses less digits than its factorization.

1271842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473.

The product of its digits is 896, while the sum is 25.

The square root of 1271842 is about 1127.7597261828. The cubic root of 1271842 is about 108.3455439228.

The spelling of 1271842 in words is "one million, two hundred seventy-one thousand, eight hundred forty-two".