162721342 has 16 divisors (see below), whose sum is σ = 284215392. Its totient is φ = 68421600.

The previous prime is 162721327. The next prime is 162721369. The reversal of 162721342 is 243127261.

It is a self number, because there is not a number n which added to its sum of digits gives 162721342.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 108909 + ... + 110392.

It is an arithmetic number, because the mean of its divisors is an integer number (17763462).

Almost surely, 2^162721342 is an apocalyptic number.

162721342 is a deficient number, since it is larger than the sum of its proper divisors (121494050).

162721342 is a wasteful number, since it uses less digits than its factorization.

162721342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219363.

The product of its digits is 4032, while the sum is 28.

The square root of 162721342 is about 12756.2275771483. The cubic root of 162721342 is about 545.9440943354.

The spelling of 162721342 in words is "one hundred sixty-two million, seven hundred twenty-one thousand, three hundred forty-two".