161442224 has 10 divisors (see below), whose sum is σ = 312794340. Its totient is φ = 80721104.

The previous prime is 161442191. The next prime is 161442247. The reversal of 161442224 is 422244161.

It is a junction number, because it is equal to n+sod(n) for n = 161442193 and 161442202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5045054 + ... + 5045085.

It is an arithmetic number, because the mean of its divisors is an integer number (31279434).

Almost surely, 2^161442224 is an apocalyptic number.

It is an amenable number.

161442224 is a deficient number, since it is larger than the sum of its proper divisors (151352116).

161442224 is a wasteful number, since it uses less digits than its factorization.

161442224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10090147 (or 10090141 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 161442224 is about 12705.9916574819. The cubic root of 161442224 is about 544.5098125903.

Adding to 161442224 its reverse (422244161), we get a palindrome (583686385).

The spelling of 161442224 in words is "one hundred sixty-one million, four hundred forty-two thousand, two hundred twenty-four".