162240142 has 4 divisors (see below), whose sum is σ = 243360216. Its totient is φ = 81120070.

The previous prime is 162240139. The next prime is 162240149. The reversal of 162240142 is 241042261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241042261 = 223 ⋅1080907.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162240149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40560034 + ... + 40560037.

It is an arithmetic number, because the mean of its divisors is an integer number (60840054).

Almost surely, 2^162240142 is an apocalyptic number.

162240142 is a deficient number, since it is larger than the sum of its proper divisors (81120074).

162240142 is an equidigital number, since it uses as much as digits as its factorization.

162240142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81120073.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 162240142 is about 12737.3522366307. The cubic root of 162240142 is about 545.4054071913.

The spelling of 162240142 in words is "one hundred sixty-two million, two hundred forty thousand, one hundred forty-two".