1320172 has 12 divisors (see below), whose sum is σ = 2640400. Its totient is φ = 565776.

The previous prime is 1320161. The next prime is 1320173. The reversal of 1320172 is 2710231.

It is a happy number.

1320172 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1320173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23547 + ... + 23602.

2^1320172 is an apocalyptic number.

It is an amenable number.

1320172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1320172 is a wasteful number, since it uses less digits than its factorization.

1320172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47160 (or 47158 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 1320172 is about 1148.9873802614. The cubic root of 1320172 is about 109.7008954212.

The spelling of 1320172 in words is "one million, three hundred twenty thousand, one hundred seventy-two".