140166247 has 8 divisors (see below), whose sum is σ = 151709600. Its totient is φ = 128731680.

The previous prime is 140166179. The next prime is 140166263. The reversal of 140166247 is 742661041.

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

It is a cyclic number.

It is not a de Polignac number, because 140166247 - 2⁷ = 140166119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140166277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24504 + ... + 29677.

It is an arithmetic number, because the mean of its divisors is an integer number (18963700).

Almost surely, 2^140166247 is an apocalyptic number.

140166247 is a deficient number, since it is larger than the sum of its proper divisors (11543353).

140166247 is a wasteful number, since it uses less digits than its factorization.

140166247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54393.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 140166247 is about 11839.1826998319. The cubic root of 140166247 is about 519.4548613995.

The spelling of 140166247 in words is "one hundred forty million, one hundred sixty-six thousand, two hundred forty-seven".