161542326 has 16 divisors (see below), whose sum is σ = 352456128. Its totient is φ = 48952200.

The previous prime is 161542289. The next prime is 161542369. The reversal of 161542326 is 623245161.

It is a junction number, because it is equal to n+sod(n) for n = 161542293 and 161542302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1223740 + ... + 1223871.

It is an arithmetic number, because the mean of its divisors is an integer number (22028508).

Almost surely, 2^161542326 is an apocalyptic number.

161542326 is an abundant number, since it is smaller than the sum of its proper divisors (190913802).

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

161542326 is a wasteful number, since it uses less digits than its factorization.

161542326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447627.

The product of its digits is 8640, while the sum is 30.

The square root of 161542326 is about 12709.9302122396. The cubic root of 161542326 is about 544.6223301590.

Adding to 161542326 its reverse (623245161), we get a palindrome (784787487).

The spelling of 161542326 in words is "one hundred sixty-one million, five hundred forty-two thousand, three hundred twenty-six".