140281747 has 4 divisors (see below), whose sum is σ = 140397120. Its totient is φ = 140166376.

The previous prime is 140281733. The next prime is 140281751. The reversal of 140281747 is 747182041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747182041 = 479 ⋅1559879.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140281747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140281247) 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 3 ways as a sum of consecutive naturals, for example, 55843 + ... + 58300.

It is an arithmetic number, because the mean of its divisors is an integer number (35099280).

Almost surely, 2^140281747 is an apocalyptic number.

140281747 is a deficient number, since it is larger than the sum of its proper divisors (115373).

140281747 is a wasteful number, since it uses less digits than its factorization.

140281747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115372.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 140281747 is about 11844.0595658752. The cubic root of 140281747 is about 519.5975028835.

The spelling of 140281747 in words is "one hundred forty million, two hundred eighty-one thousand, seven hundred forty-seven".