140781194 has 4 divisors (see below), whose sum is σ = 211171794. Its totient is φ = 70390596.

The previous prime is 140781191. The next prime is 140781209. The reversal of 140781194 is 491187041.

140781194 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 134212225 + 6568969 = 11585^2 + 2563^2 .

It is not an unprimeable number, because it can be changed into a prime (140781191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35195297 + ... + 35195300.

Almost surely, 2^140781194 is an apocalyptic number.

140781194 is a deficient number, since it is larger than the sum of its proper divisors (70390600).

140781194 is an equidigital number, since it uses as much as digits as its factorization.

140781194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70390599.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 140781194 is about 11865.1251152274. The cubic root of 140781194 is about 520.2134158506.

The spelling of 140781194 in words is "one hundred forty million, seven hundred eighty-one thousand, one hundred ninety-four".