140194213 has 2 divisors, whose sum is σ = 140194214. Its totient is φ = 140194212.

The previous prime is 140194163. The next prime is 140194231. The reversal of 140194213 is 312491041.

It is a happy number.

Together with next prime (140194231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139074849 + 1119364 = 11793^2 + 1058^2 .

It is a cyclic number.

It is not a de Polignac number, because 140194213 - 2⁹ = 140193701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140194283) 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, 70097106 + 70097107.

It is an arithmetic number, because the mean of its divisors is an integer number (70097107).

Almost surely, 2^140194213 is an apocalyptic number.

It is an amenable number.

140194213 is a deficient number, since it is larger than the sum of its proper divisors (1).

140194213 is an equidigital number, since it uses as much as digits as its factorization.

140194213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 140194213 is about 11840.3637190755. The cubic root of 140194213 is about 519.4894063510.

The spelling of 140194213 in words is "one hundred forty million, one hundred ninety-four thousand, two hundred thirteen".