66142234 has 8 divisors (see below), whose sum is σ = 100572660. Its totient is φ = 32618016.

The previous prime is 66142217. The next prime is 66142247. The reversal of 66142234 is 43224166.

It can be written as a sum of positive squares in 2 ways, for example, as 55547209 + 10595025 = 7453^2 + 3255^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226369 + ... + 226660.

Almost surely, 2^66142234 is an apocalyptic number.

66142234 is a deficient number, since it is larger than the sum of its proper divisors (34430426).

66142234 is a wasteful number, since it uses less digits than its factorization.

66142234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453104.

The product of its digits is 6912, while the sum is 28.

The square root of 66142234 is about 8132.7875909801. The cubic root of 66142234 is about 404.4140976763.

The spelling of 66142234 in words is "sixty-six million, one hundred forty-two thousand, two hundred thirty-four".