1277872 has 10 divisors (see below), whose sum is σ = 2475908. Its totient is φ = 638928.

The previous prime is 1277867. The next prime is 1277879. The reversal of 1277872 is 2787721.

It is not an unprimeable number, because it can be changed into a prime (1277879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39918 + ... + 39949.

2^1277872 is an apocalyptic number.

It is an amenable number.

1277872 is a deficient number, since it is larger than the sum of its proper divisors (1198036).

1277872 is an equidigital number, since it uses as much as digits as its factorization.

1277872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79875 (or 79869 counting only the distinct ones).

The product of its digits is 10976, while the sum is 34.

The square root of 1277872 is about 1130.4300066789. The cubic root of 1277872 is about 108.5165016985.

The spelling of 1277872 in words is "one million, two hundred seventy-seven thousand, eight hundred seventy-two".