140364161 has 4 divisors (see below), whose sum is σ = 160416192. Its totient is φ = 120312132.

The previous prime is 140364157. The next prime is 140364221. The reversal of 140364161 is 161463041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140364161 - 2² = 140364157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140364161.

It is not an unprimeable number, because it can be changed into a prime (140364131) 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, 10026005 + ... + 10026018.

It is an arithmetic number, because the mean of its divisors is an integer number (40104048).

Almost surely, 2^140364161 is an apocalyptic number.

It is an amenable number.

140364161 is a deficient number, since it is larger than the sum of its proper divisors (20052031).

140364161 is an equidigital number, since it uses as much as digits as its factorization.

140364161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20052030.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 140364161 is about 11847.5381830995. The cubic root of 140364161 is about 519.6992355902.

The spelling of 140364161 in words is "one hundred forty million, three hundred sixty-four thousand, one hundred sixty-one".