1227120 has 40 divisors (see below), whose sum is σ = 3804816. Its totient is φ = 327168.

The previous prime is 1227103. The next prime is 1227131. The reversal of 1227120 is 217221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1227120.

It is a congruent number.

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, 2317 + ... + 2796.

2^1227120 is an apocalyptic number.

1227120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1227120 is an abundant number, since it is smaller than the sum of its proper divisors (2577696).

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

1227120 is a wasteful number, since it uses less digits than its factorization.

1227120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129 (or 5123 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 1227120 is about 1107.7544854344. The cubic root of 1227120 is about 107.0604369315.

The spelling of 1227120 in words is "one million, two hundred twenty-seven thousand, one hundred twenty".