1272170 has 8 divisors (see below), whose sum is σ = 2289924. Its totient is φ = 508864.

The previous prime is 1272169. The next prime is 1272191. The reversal of 1272170 is 712721.

It can be written as a sum of positive squares in 2 ways, for example, as 1181569 + 90601 = 1087^2 + 301^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 63599 + ... + 63618.

2^1272170 is an apocalyptic number.

1272170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1272170 is a deficient number, since it is larger than the sum of its proper divisors (1017754).

1272170 is a wasteful number, since it uses less digits than its factorization.

1272170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127224.

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

The square root of 1272170 is about 1127.9051378551. The cubic root of 1272170 is about 108.3548569989.

Adding to 1272170 its reverse (712721), we get a palindrome (1984891).

The spelling of 1272170 in words is "one million, two hundred seventy-two thousand, one hundred seventy".