140434213 has 2 divisors, whose sum is σ = 140434214. Its totient is φ = 140434212.

The previous prime is 140434207. The next prime is 140434223. The reversal of 140434213 is 312434041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77739489 + 62694724 = 8817^2 + 7918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140434213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140434223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70217106 + 70217107.

It is an arithmetic number, because the mean of its divisors is an integer number (70217107).

Almost surely, 2^140434213 is an apocalyptic number.

It is an amenable number.

140434213 is a deficient number, since it is larger than the sum of its proper divisors (1).

140434213 is an equidigital number, since it uses as much as digits as its factorization.

140434213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 140434213 is about 11850.4942091037. The cubic root of 140434213 is about 519.7856772096.

Adding to 140434213 its reverse (312434041), we get a palindrome (452868254).

The spelling of 140434213 in words is "one hundred forty million, four hundred thirty-four thousand, two hundred thirteen".