140530747 has 4 divisors (see below), whose sum is σ = 160606576. Its totient is φ = 120454920.

The previous prime is 140530729. The next prime is 140530771. The reversal of 140530747 is 747035041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747035041 = 29 ⋅25759829.

It is a cyclic number.

It is not a de Polignac number, because 140530747 - 2¹¹ = 140528699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140530727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10037904 + ... + 10037917.

It is an arithmetic number, because the mean of its divisors is an integer number (40151644).

Almost surely, 2^140530747 is an apocalyptic number.

140530747 is a deficient number, since it is larger than the sum of its proper divisors (20075829).

140530747 is an equidigital number, since it uses as much as digits as its factorization.

140530747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20075828.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 140530747 is about 11854.5665040945. The cubic root of 140530747 is about 519.9047495655.

Adding to 140530747 its reverse (747035041), we get a palindrome (887565788).

The spelling of 140530747 in words is "one hundred forty million, five hundred thirty thousand, seven hundred forty-seven".