164240242 has 4 divisors (see below), whose sum is σ = 246360366. Its totient is φ = 82120120.

The previous prime is 164240233. The next prime is 164240257. The reversal of 164240242 is 242042461.

It is a happy number.

164240242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242042461 = 1249 ⋅193789.

It can be written as a sum of positive squares in only one way, i.e., 162333081 + 1907161 = 12741^2 + 1381^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41060059 + ... + 41060062.

Almost surely, 2^164240242 is an apocalyptic number.

164240242 is a deficient number, since it is larger than the sum of its proper divisors (82120124).

164240242 is an equidigital number, since it uses as much as digits as its factorization.

164240242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82120123.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 164240242 is about 12815.6249164838. The cubic root of 164240242 is about 547.6375162448.

The spelling of 164240242 in words is "one hundred sixty-four million, two hundred forty thousand, two hundred forty-two".