140252191 has 2 divisors, whose sum is σ = 140252192. Its totient is φ = 140252190.

The previous prime is 140252179. The next prime is 140252201. The reversal of 140252191 is 191252041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140252191 - 2¹⁵ = 140219423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140252291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70126095 + 70126096.

It is an arithmetic number, because the mean of its divisors is an integer number (70126096).

Almost surely, 2^140252191 is an apocalyptic number.

140252191 is a deficient number, since it is larger than the sum of its proper divisors (1).

140252191 is an equidigital number, since it uses as much as digits as its factorization.

140252191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 140252191 is about 11842.8117860582. The cubic root of 140252191 is about 519.5610089399.

The spelling of 140252191 in words is "one hundred forty million, two hundred fifty-two thousand, one hundred ninety-one".