140781395 has 4 divisors (see below), whose sum is σ = 168937680. Its totient is φ = 112625112.

The previous prime is 140781391. The next prime is 140781451. The reversal of 140781395 is 593187041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 593187041 = 151 ⋅3928391.

It is a cyclic number.

It is not a de Polignac number, because 140781395 - 2² = 140781391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140781391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14078135 + ... + 14078144.

It is an arithmetic number, because the mean of its divisors is an integer number (42234420).

Almost surely, 2^140781395 is an apocalyptic number.

140781395 is a deficient number, since it is larger than the sum of its proper divisors (28156285).

140781395 is an equidigital number, since it uses as much as digits as its factorization.

140781395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28156284.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 140781395 is about 11865.1335854258. The cubic root of 140781395 is about 520.2136634283.

The spelling of 140781395 in words is "one hundred forty million, seven hundred eighty-one thousand, three hundred ninety-five".