1270161 has 12 divisors (see below), whose sum is σ = 1902992. Its totient is φ = 846612.

The previous prime is 1270151. The next prime is 1270183. The reversal of 1270161 is 1610721.

It is not a de Polignac number, because 1270161 - 2⁶ = 1270097 is a prime.

It is a super-2 number, since 2×1270161² = 3226617931842, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1270111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2371 + ... + 2856.

2^1270161 is an apocalyptic number.

It is an amenable number.

1270161 is a deficient number, since it is larger than the sum of its proper divisors (632831).

1270161 is an frugal number, since it uses more digits than its factorization.

1270161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5242 (or 5230 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 1270161 is about 1127.0141968937. The cubic root of 1270161 is about 108.2977892597.

Adding to 1270161 its reverse (1610721), we get a palindrome (2880882).

It can be divided in two parts, 1270 and 161, that added together give a triangular number (1431 = T₅₃).

The spelling of 1270161 in words is "one million, two hundred seventy thousand, one hundred sixty-one".