140252666 has 8 divisors (see below), whose sum is σ = 219525984. Its totient is φ = 67077340.

The previous prime is 140252663. The next prime is 140252687. The reversal of 140252666 is 666252041.

140252666 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140252663) 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, 1524440 + ... + 1524531.

It is an arithmetic number, because the mean of its divisors is an integer number (27440748).

Almost surely, 2^140252666 is an apocalyptic number.

140252666 is a deficient number, since it is larger than the sum of its proper divisors (79273318).

140252666 is a wasteful number, since it uses less digits than its factorization.

140252666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048996.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 140252666 is about 11842.8318404003. The cubic root of 140252666 is about 519.5615954815.

The spelling of 140252666 in words is "one hundred forty million, two hundred fifty-two thousand, six hundred sixty-six".