140068247 has 16 divisors (see below), whose sum is σ = 161502720. Its totient is φ = 120139200.

The previous prime is 140068223. The next prime is 140068249. The reversal of 140068247 is 742860041.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140068247 is a prime.

It is a super-2 number, since 2×140068247² = 39238227635306018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140068249) 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 15 ways as a sum of consecutive naturals, for example, 55403 + ... + 57875.

It is an arithmetic number, because the mean of its divisors is an integer number (10093920).

Almost surely, 2^140068247 is an apocalyptic number.

140068247 is a deficient number, since it is larger than the sum of its proper divisors (21434473).

140068247 is a wasteful number, since it uses less digits than its factorization.

140068247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 140068247 is about 11835.0431769386. The cubic root of 140068247 is about 519.3337707988. Note that the first 3 decimals are identical.

The spelling of 140068247 in words is "one hundred forty million, sixty-eight thousand, two hundred forty-seven".