1320912 has 30 divisors (see below), whose sum is σ = 3697122. Its totient is φ = 440256.

The previous prime is 1320911. The next prime is 1320923. The reversal of 1320912 is 2190231.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 767376 + 553536 = 876^2 + 744^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4443 + ... + 4730.

2^1320912 is an apocalyptic number.

1320912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1320912 is an abundant number, since it is smaller than the sum of its proper divisors (2376210).

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

1320912 is a wasteful number, since it uses less digits than its factorization.

1320912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9187 (or 9178 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1320912 is about 1149.3093578319. The cubic root of 1320912 is about 109.7213885841.

The spelling of 1320912 in words is "one million, three hundred twenty thousand, nine hundred twelve".