66305142 has 20 divisors (see below), whose sum is σ = 148572996. Its totient is φ = 22101660.

The previous prime is 66305137. The next prime is 66305167. The reversal of 66305142 is 24150366.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 204484 + ... + 204807.

Almost surely, 2^66305142 is an apocalyptic number.

66305142 is an abundant number, since it is smaller than the sum of its proper divisors (82267854).

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

66305142 is a wasteful number, since it uses less digits than its factorization.

66305142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409305 (or 409296 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 66305142 is about 8142.7969396271. The cubic root of 66305142 is about 404.7458487753.

The spelling of 66305142 in words is "sixty-six million, three hundred five thousand, one hundred forty-two".