140682947 has 4 divisors (see below), whose sum is σ = 141086400. Its totient is φ = 140279496.

The previous prime is 140682901. The next prime is 140682961. The reversal of 140682947 is 749286041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749286041 = 7 ⋅107040863.

It is a cyclic number.

It is not a de Polignac number, because 140682947 - 2²⁰ = 139634371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140682977) 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, 201203 + ... + 201900.

It is an arithmetic number, because the mean of its divisors is an integer number (35271600).

Almost surely, 2^140682947 is an apocalyptic number.

140682947 is a deficient number, since it is larger than the sum of its proper divisors (403453).

140682947 is an equidigital number, since it uses as much as digits as its factorization.

140682947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403452.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 140682947 is about 11860.9842340339. The cubic root of 140682947 is about 520.0923738755.

The spelling of 140682947 in words is "one hundred forty million, six hundred eighty-two thousand, nine hundred forty-seven".