140193149 has 2 divisors, whose sum is σ = 140193150. Its totient is φ = 140193148.

The previous prime is 140193143. The next prime is 140193161. The reversal of 140193149 is 941391041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132940900 + 7252249 = 11530^2 + 2693^2 .

It is a cyclic number.

It is not a de Polignac number, because 140193149 - 2⁴ = 140193133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140193143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70096574 + 70096575.

It is an arithmetic number, because the mean of its divisors is an integer number (70096575).

Almost surely, 2^140193149 is an apocalyptic number.

It is an amenable number.

140193149 is a deficient number, since it is larger than the sum of its proper divisors (1).

140193149 is an equidigital number, since it uses as much as digits as its factorization.

140193149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 140193149 is about 11840.3187879381. The cubic root of 140193149 is about 519.4880921310.

The spelling of 140193149 in words is "one hundred forty million, one hundred ninety-three thousand, one hundred forty-nine".