163240426 has 8 divisors (see below), whose sum is σ = 259264260. Its totient is φ = 76819008.

The previous prime is 163240423. The next prime is 163240459. The reversal of 163240426 is 624042361.

It can be written as a sum of positive squares in 2 ways, for example, as 153784801 + 9455625 = 12401^2 + 3075^2 .

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

It is a super-2 number, since 2×163240426² = 53294873361322952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163240394 and 163240403.

It is not an unprimeable number, because it can be changed into a prime (163240421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2400561 + ... + 2400628.

Almost surely, 2^163240426 is an apocalyptic number.

163240426 is a deficient number, since it is larger than the sum of its proper divisors (96023834).

163240426 is a wasteful number, since it uses less digits than its factorization.

163240426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4801208.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 163240426 is about 12776.5576741155. The cubic root of 163240426 is about 546.5240019515.

Adding to 163240426 its reverse (624042361), we get a palindrome (787282787).

The spelling of 163240426 in words is "one hundred sixty-three million, two hundred forty thousand, four hundred twenty-six".