161543426 has 8 divisors (see below), whose sum is σ = 264343824. Its totient is φ = 73428820.

The previous prime is 161543411. The next prime is 161543461. The reversal of 161543426 is 624345161.

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

It is a junction number, because it is equal to n+sod(n) for n = 161543392 and 161543401.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3671420 + ... + 3671463.

It is an arithmetic number, because the mean of its divisors is an integer number (33042978).

Almost surely, 2^161543426 is an apocalyptic number.

161543426 is a deficient number, since it is larger than the sum of its proper divisors (102800398).

161543426 is a wasteful number, since it uses less digits than its factorization.

161543426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7342896.

The product of its digits is 17280, while the sum is 32.

The square root of 161543426 is about 12709.9734854169. The cubic root of 161543426 is about 544.6235663329.

Adding to 161543426 its reverse (624345161), we get a palindrome (785888587).

The spelling of 161543426 in words is "one hundred sixty-one million, five hundred forty-three thousand, four hundred twenty-six".