162744121 has 4 divisors (see below), whose sum is σ = 166528912. Its totient is φ = 158959332.

The previous prime is 162744059. The next prime is 162744151. The reversal of 162744121 is 121447261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 162744121 - 2¹⁹ = 162219833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 162744121.

It is not an unprimeable number, because it can be changed into a prime (162744151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1892331 + ... + 1892416.

It is an arithmetic number, because the mean of its divisors is an integer number (41632228).

Almost surely, 2^162744121 is an apocalyptic number.

It is an amenable number.

162744121 is a deficient number, since it is larger than the sum of its proper divisors (3784791).

162744121 is an equidigital number, since it uses as much as digits as its factorization.

162744121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784790.

The product of its digits is 2688, while the sum is 28.

The square root of 162744121 is about 12757.1204039156. The cubic root of 162744121 is about 545.9695683147.

The spelling of 162744121 in words is "one hundred sixty-two million, seven hundred forty-four thousand, one hundred twenty-one".