161424 has 60 divisors (see below), whose sum is σ = 483600. Its totient is φ = 50112.

The previous prime is 161411. The next prime is 161453. The reversal of 161424 is 424161.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 161397 and 161406.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 161424.

It is an unprimeable number.

161424 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2707 + ... + 2765.

It is an arithmetic number, because the mean of its divisors is an integer number (8060).

2¹⁶¹⁴²⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241800).

161424 is an abundant number, since it is smaller than the sum of its proper divisors (322176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161424 is a wasteful number, since it uses less digits than its factorization.

161424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 83 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 161424 is about 401.7760570268. The cubic root of 161424 is about 54.4489323278.

Adding to 161424 its reverse (424161), we get a palindrome (585585).

It can be divided in two parts, 161 and 424, that added together give a palindrome (585).

The spelling of 161424 in words is "one hundred sixty-one thousand, four hundred twenty-four".