140668195 has 4 divisors (see below), whose sum is σ = 168801840. Its totient is φ = 112534552.

The previous prime is 140668123. The next prime is 140668211. The reversal of 140668195 is 591866041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 591866041 = 13 ⋅45528157.

It is a cyclic number.

It is not a de Polignac number, because 140668195 - 2¹¹ = 140666147 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14066815 + ... + 14066824.

It is an arithmetic number, because the mean of its divisors is an integer number (42200460).

Almost surely, 2^140668195 is an apocalyptic number.

140668195 is a deficient number, since it is larger than the sum of its proper divisors (28133645).

140668195 is an equidigital number, since it uses as much as digits as its factorization.

140668195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28133644.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 140668195 is about 11860.3623469100. The cubic root of 140668195 is about 520.0741942950.

The spelling of 140668195 in words is "one hundred forty million, six hundred sixty-eight thousand, one hundred ninety-five".