140656433 has 2 divisors, whose sum is σ = 140656434. Its totient is φ = 140656432.

The previous prime is 140656427. The next prime is 140656441. The reversal of 140656433 is 334656041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113699569 + 26956864 = 10663^2 + 5192^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140656433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140656433.

It is not a weakly prime, because it can be changed into another prime (140656493) 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 as a sum of consecutive naturals, namely, 70328216 + 70328217.

It is an arithmetic number, because the mean of its divisors is an integer number (70328217).

Almost surely, 2^140656433 is an apocalyptic number.

It is an amenable number.

140656433 is a deficient number, since it is larger than the sum of its proper divisors (1).

140656433 is an equidigital number, since it uses as much as digits as its factorization.

140656433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 140656433 is about 11859.8664832282. The cubic root of 140656433 is about 520.0596985208.

The spelling of 140656433 in words is "one hundred forty million, six hundred fifty-six thousand, four hundred thirty-three".