4012161 has 8 divisors (see below), whose sum is σ = 5429664. Its totient is φ = 2634720.

The previous prime is 4012157. The next prime is 4012163. The reversal of 4012161 is 1612104.

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

It is not a de Polignac number, because 4012161 - 2² = 4012157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4012161.

It is not an unprimeable number, because it can be changed into a prime (4012163) 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, 9780 + ... + 10181.

It is an arithmetic number, because the mean of its divisors is an integer number (678708).

Almost surely, 2^4012161 is an apocalyptic number.

It is an amenable number.

4012161 is a deficient number, since it is larger than the sum of its proper divisors (1417503).

4012161 is a wasteful number, since it uses less digits than its factorization.

4012161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20031.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 4012161 is about 2003.0379427260. The cubic root of 4012161 is about 158.9008123117.

Adding to 4012161 its reverse (1612104), we get a palindrome (5624265).

The spelling of 4012161 in words is "four million, twelve thousand, one hundred sixty-one".