1242161 has 8 divisors (see below), whose sum is σ = 1321920. Its totient is φ = 1164592.

The previous prime is 1242151. The next prime is 1242167. The reversal of 1242161 is 1612421.

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

It is a cyclic number.

It is not a de Polignac number, because 1242161 - 2⁶ = 1242097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1242167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710 + ... + 1728.

It is an arithmetic number, because the mean of its divisors is an integer number (165240).

2^1242161 is an apocalyptic number.

It is an amenable number.

1242161 is a deficient number, since it is larger than the sum of its proper divisors (79759).

1242161 is a wasteful number, since it uses less digits than its factorization.

1242161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095.

The product of its digits is 96, while the sum is 17.

The square root of 1242161 is about 1114.5227678249. The cubic root of 1242161 is about 107.4960806215.

Adding to 1242161 its reverse (1612421), we get a palindrome (2854582).

The spelling of 1242161 in words is "one million, two hundred forty-two thousand, one hundred sixty-one".