1277120 has 56 divisors (see below), whose sum is σ = 3285744. Its totient is φ = 470016.

The previous prime is 1277113. The next prime is 1277137. The reversal of 1277120 is 217721.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1277092 and 1277101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4007 + ... + 4313.

It is an arithmetic number, because the mean of its divisors is an integer number (58674).

2^1277120 is an apocalyptic number.

1277120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1277120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1642872).

1277120 is an abundant number, since it is smaller than the sum of its proper divisors (2008624).

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

1277120 is a wasteful number, since it uses less digits than its factorization.

1277120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 1277120 is about 1130.0973409402. The cubic root of 1277120 is about 108.4952109844.

The spelling of 1277120 in words is "one million, two hundred seventy-seven thousand, one hundred twenty".