162185642 has 4 divisors (see below), whose sum is σ = 243278466. Its totient is φ = 81092820.

The previous prime is 162185629. The next prime is 162185663. The reversal of 162185642 is 246581261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246581261 = 839 ⋅293899.

It can be written as a sum of positive squares in only one way, i.e., 101828281 + 60357361 = 10091^2 + 7769^2 .

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 as a sum of consecutive naturals, namely, 40546409 + ... + 40546412.

Almost surely, 2^162185642 is an apocalyptic number.

162185642 is a deficient number, since it is larger than the sum of its proper divisors (81092824).

162185642 is an equidigital number, since it uses as much as digits as its factorization.

162185642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81092823.

The product of its digits is 23040, while the sum is 35.

The square root of 162185642 is about 12735.2126798103. The cubic root of 162185642 is about 545.3443291635.

The spelling of 162185642 in words is "one hundred sixty-two million, one hundred eighty-five thousand, six hundred forty-two".