1012161 has 8 divisors (see below), whose sum is σ = 1408320. Its totient is φ = 645392.

The previous prime is 1012159. The next prime is 1012171. The reversal of 1012161 is 1612101.

It is a happy number.

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 1012161 - 2¹ = 1012159 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1012171) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7266 + ... + 7403.

It is an arithmetic number, because the mean of its divisors is an integer number (176040).

2^1012161 is an apocalyptic number.

It is an amenable number.

1012161 is a deficient number, since it is larger than the sum of its proper divisors (396159).

1012161 is a wasteful number, since it uses less digits than its factorization.

1012161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14695.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1012161 is about 1006.0621253183. The cubic root of 1012161 is about 100.4037344579.

Adding to 1012161 its reverse (1612101), we get a palindrome (2624262).

The spelling of 1012161 in words is "one million, twelve thousand, one hundred sixty-one".