163424642 has 4 divisors (see below), whose sum is σ = 245136966. Its totient is φ = 81712320.

The previous prime is 163424633. The next prime is 163424669. The reversal of 163424642 is 246424361.

163424642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246424361 = 587 ⋅419803.

It can be written as a sum of positive squares in only one way, i.e., 163302841 + 121801 = 12779^2 + 349^2 .

It is a super-2 number, since 2×163424642² = 53415227225656328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163424599 and 163424608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40856159 + ... + 40856162.

Almost surely, 2^163424642 is an apocalyptic number.

163424642 is a deficient number, since it is larger than the sum of its proper divisors (81712324).

163424642 is an equidigital number, since it uses as much as digits as its factorization.

163424642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81712323.

The product of its digits is 27648, while the sum is 32.

The square root of 163424642 is about 12783.7647819412. The cubic root of 163424642 is about 546.7295078628.

The spelling of 163424642 in words is "one hundred sixty-three million, four hundred twenty-four thousand, six hundred forty-two".