161235 has 12 divisors (see below), whose sum is σ = 279552. Its totient is φ = 85968.

The previous prime is 161233. The next prime is 161237. The reversal of 161235 is 532161.

It is an interprime number because it is at equal distance from previous prime (161233) and next prime (161237).

It is not a de Polignac number, because 161235 - 2¹ = 161233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161233) 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 11 ways as a sum of consecutive naturals, for example, 1747 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (23296).

2¹⁶¹²³⁵ is an apocalyptic number.

161235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161235 is a deficient number, since it is larger than the sum of its proper divisors (118317).

161235 is a wasteful number, since it uses less digits than its factorization.

161235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3594 (or 3591 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 161235 is about 401.5407824867. The cubic root of 161235 is about 54.4276738882.

Adding to 161235 its reverse (532161), we get a palindrome (693396).

The spelling of 161235 in words is "one hundred sixty-one thousand, two hundred thirty-five".