66131042 has 8 divisors (see below), whose sum is σ = 99262416. Its totient is φ = 33043572.

The previous prime is 66131041. The next prime is 66131081. The reversal of 66131042 is 24013166.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 66130999 and 66131017.

It is not an unprimeable number, because it can be changed into a prime (66131041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6908 + ... + 13415.

It is an arithmetic number, because the mean of its divisors is an integer number (12407802).

Almost surely, 2^66131042 is an apocalyptic number.

66131042 is a deficient number, since it is larger than the sum of its proper divisors (33131374).

66131042 is a wasteful number, since it uses less digits than its factorization.

66131042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21952.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 66131042 is about 8132.0994829134. The cubic root of 66131042 is about 404.3912859385.

The spelling of 66131042 in words is "sixty-six million, one hundred thirty-one thousand, forty-two".