162147021 has 8 divisors (see below), whose sum is σ = 217523040. Its totient is φ = 107434512.

The previous prime is 162146993. The next prime is 162147067. The reversal of 162147021 is 120741261.

162147021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 162147021 - 2¹³ = 162138829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 162146982 and 162147000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162143021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165306 + ... + 166283.

It is an arithmetic number, because the mean of its divisors is an integer number (27190380).

Almost surely, 2^162147021 is an apocalyptic number.

It is an amenable number.

162147021 is a deficient number, since it is larger than the sum of its proper divisors (55376019).

162147021 is a wasteful number, since it uses less digits than its factorization.

162147021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331755.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 162147021 is about 12733.6962819128. The cubic root of 162147021 is about 545.3010384112.

Adding to 162147021 its reverse (120741261), we get a palindrome (282888282).

The spelling of 162147021 in words is "one hundred sixty-two million, one hundred forty-seven thousand, twenty-one".