1277121 has 16 divisors (see below), whose sum is σ = 1806336. Its totient is φ = 800976.

The previous prime is 1277113. The next prime is 1277137. The reversal of 1277121 is 1217721.

It is a happy number.

It is not a de Polignac number, because 1277121 - 2³ = 1277113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1277021) 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 15 ways as a sum of consecutive naturals, for example, 5616 + ... + 5838.

It is an arithmetic number, because the mean of its divisors is an integer number (112896).

2^1277121 is an apocalyptic number.

It is an amenable number.

1277121 is a deficient number, since it is larger than the sum of its proper divisors (529215).

1277121 is a wasteful number, since it uses less digits than its factorization.

1277121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332.

The product of its digits is 196, while the sum is 21.

The square root of 1277121 is about 1130.0977833798. The cubic root of 1277121 is about 108.4952393021.

The spelling of 1277121 in words is "one million, two hundred seventy-seven thousand, one hundred twenty-one".