140321465 has 4 divisors (see below), whose sum is σ = 168385764. Its totient is φ = 112257168.

The previous prime is 140321453. The next prime is 140321471. The reversal of 140321465 is 564123041.

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

It can be written as a sum of positive squares in 2 ways, for example, as 110586256 + 29735209 = 10516^2 + 5453^2 .

It is a cyclic number.

It is not a de Polignac number, because 140321465 - 2⁴ = 140321449 is a prime.

It is a super-2 number, since 2×140321465² = 39380227079492450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14032142 + ... + 14032151.

It is an arithmetic number, because the mean of its divisors is an integer number (42096441).

Almost surely, 2^140321465 is an apocalyptic number.

It is an amenable number.

140321465 is a deficient number, since it is larger than the sum of its proper divisors (28064299).

140321465 is an equidigital number, since it uses as much as digits as its factorization.

140321465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28064298.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 140321465 is about 11845.7361527260. The cubic root of 140321465 is about 519.6465361723.

The spelling of 140321465 in words is "one hundred forty million, three hundred twenty-one thousand, four hundred sixty-five".