66468142 has 8 divisors (see below), whose sum is σ = 107371656. Its totient is φ = 30677592.

The previous prime is 66468139. The next prime is 66468173. The reversal of 66468142 is 24186466.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1278208 + ... + 1278259.

It is an arithmetic number, because the mean of its divisors is an integer number (13421457).

Almost surely, 2^66468142 is an apocalyptic number.

66468142 is a deficient number, since it is larger than the sum of its proper divisors (40903514).

66468142 is a wasteful number, since it uses less digits than its factorization.

66468142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556482.

The product of its digits is 55296, while the sum is 37.

The square root of 66468142 is about 8152.7996418408. The cubic root of 66468142 is about 405.0772438147.

The spelling of 66468142 in words is "sixty-six million, four hundred sixty-eight thousand, one hundred forty-two".