66241242 has 72 divisors (see below), whose sum is σ = 155799072. Its totient is φ = 20291040.

The previous prime is 66241237. The next prime is 66241261. The reversal of 66241242 is 24214266.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1085892 + ... + 1085952.

It is an arithmetic number, because the mean of its divisors is an integer number (2163876).

Almost surely, 2^66241242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66241242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77899536).

66241242 is an abundant number, since it is smaller than the sum of its proper divisors (89557830).

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

66241242 is a wasteful number, since it uses less digits than its factorization.

66241242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 132 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 66241242 is about 8138.8722806050. The cubic root of 66241242 is about 404.6157855968.

The spelling of 66241242 in words is "sixty-six million, two hundred forty-one thousand, two hundred forty-two".