140320052 has 12 divisors (see below), whose sum is σ = 245669760. Its totient is φ = 70128696.

The previous prime is 140320039. The next prime is 140320099. The reversal of 140320052 is 250023041.

140320052 is nontrivially palindromic in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 140320052.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4349 + ... + 17307.

It is an arithmetic number, because the mean of its divisors is an integer number (20472480).

Almost surely, 2^140320052 is an apocalyptic number.

It is an amenable number.

140320052 is a deficient number, since it is larger than the sum of its proper divisors (105349708).

140320052 is a wasteful number, since it uses less digits than its factorization.

140320052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15670 (or 15668 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 140320052 is about 11845.6765108625. The cubic root of 140320052 is about 519.6447919321.

Adding to 140320052 its reverse (250023041), we get a palindrome (390343093).

The spelling of 140320052 in words is "one hundred forty million, three hundred twenty thousand, fifty-two".