126161 has 8 divisors (see below), whose sum is σ = 146880. Its totient is φ = 106128.

The previous prime is 126151. The next prime is 126173. The reversal of 126161 is 161621.

It is a happy number.

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

It is not a de Polignac number, because 126161 - 2⁶ = 126097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (126131) 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, 335 + ... + 603.

It is an arithmetic number, because the mean of its divisors is an integer number (18360).

2¹²⁶¹⁶¹ is an apocalyptic number.

It is an amenable number.

126161 is a deficient number, since it is larger than the sum of its proper divisors (20719).

126161 is an equidigital number, since it uses as much as digits as its factorization.

126161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

The product of its digits is 72, while the sum is 17.

The square root of 126161 is about 355.1914976460. The cubic root of 126161 is about 50.1543231970.

Adding to 126161 its reverse (161621), we get a palindrome (287782).

It can be divided in two parts, 1 and 26161, that added together give a palindrome (26162).

The spelling of 126161 in words is "one hundred twenty-six thousand, one hundred sixty-one".