140137666 has 8 divisors (see below), whose sum is σ = 219345984. Its totient is φ = 67022340.

The previous prime is 140137661. The next prime is 140137667. The reversal of 140137666 is 666731041.

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

It is not an unprimeable number, because it can be changed into a prime (140137661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1523190 + ... + 1523281.

It is an arithmetic number, because the mean of its divisors is an integer number (27418248).

Almost surely, 2^140137666 is an apocalyptic number.

140137666 is a deficient number, since it is larger than the sum of its proper divisors (79208318).

140137666 is a wasteful number, since it uses less digits than its factorization.

140137666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046496.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 140137666 is about 11837.9755870672. The cubic root of 140137666 is about 519.4195520224.

The spelling of 140137666 in words is "one hundred forty million, one hundred thirty-seven thousand, six hundred sixty-six".