66450142 has 16 divisors (see below), whose sum is σ = 108864000. Its totient is φ = 30169240.

The previous prime is 66450101. The next prime is 66450149. The reversal of 66450142 is 24105466.

It is a self number, because there is not a number n which added to its sum of digits gives 66450142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66450149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30609 + ... + 32707.

It is an arithmetic number, because the mean of its divisors is an integer number (6804000).

Almost surely, 2^66450142 is an apocalyptic number.

66450142 is a deficient number, since it is larger than the sum of its proper divisors (42413858).

66450142 is a wasteful number, since it uses less digits than its factorization.

66450142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 66450142 is about 8151.6956518261. The cubic root of 66450142 is about 405.0406746732.

The spelling of 66450142 in words is "sixty-six million, four hundred fifty thousand, one hundred forty-two".