140320524 has 24 divisors (see below), whose sum is σ = 335030080. Its totient is φ = 45685584.

The previous prime is 140320517. The next prime is 140320571. The reversal of 140320524 is 425023041.

It is a self number, because there is not a number n which added to its sum of digits gives 140320524.

It is an unprimeable number.

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, 135454 + ... + 136485.

Almost surely, 2^140320524 is an apocalyptic number.

It is an amenable number.

140320524 is an abundant number, since it is smaller than the sum of its proper divisors (194709556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140320524 is a wasteful number, since it uses less digits than its factorization.

140320524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271989 (or 271987 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 140320524 is about 11845.6964337265. The cubic root of 140320524 is about 519.6453745812.

Adding to 140320524 its reverse (425023041), we get a palindrome (565343565).

The spelling of 140320524 in words is "one hundred forty million, three hundred twenty thousand, five hundred twenty-four".