66407142 has 8 divisors (see below), whose sum is σ = 132814296. Its totient is φ = 22135712.

The previous prime is 66407069. The next prime is 66407189. The reversal of 66407142 is 24170466.

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

66407142 is an admirable number.

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, 5533923 + ... + 5533934.

It is an arithmetic number, because the mean of its divisors is an integer number (16601787).

Almost surely, 2^66407142 is an apocalyptic number.

66407142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66407142 is a wasteful number, since it uses less digits than its factorization.

66407142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11067862.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 66407142 is about 8149.0577369411. The cubic root of 66407142 is about 404.9532883178.

The spelling of 66407142 in words is "sixty-six million, four hundred seven thousand, one hundred forty-two".