162021242 has 4 divisors (see below), whose sum is σ = 243031866. Its totient is φ = 81010620.

The previous prime is 162021241. The next prime is 162021287. The reversal of 162021242 is 242120261.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 154231561 + 7789681 = 12419^2 + 2791^2 .

It is a super-3 number, since 3×162021242³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (162021241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40505309 + ... + 40505312.

Almost surely, 2^162021242 is an apocalyptic number.

162021242 is a deficient number, since it is larger than the sum of its proper divisors (81010624).

162021242 is an equidigital number, since it uses as much as digits as its factorization.

162021242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81010623.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 162021242 is about 12728.7564985744. The cubic root of 162021242 is about 545.1600035217.

The spelling of 162021242 in words is "one hundred sixty-two million, twenty-one thousand, two hundred forty-two".