140561273 has 4 divisors (see below), whose sum is σ = 141274980. Its totient is φ = 139847568.

The previous prime is 140561269. The next prime is 140561329. The reversal of 140561273 is 372165041.

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 125171344 + 15389929 = 11188^2 + 3923^2 .

It is a cyclic number.

It is not a de Polignac number, because 140561273 - 2² = 140561269 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140561233) by changing a digit.

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, 356558 + ... + 356951.

It is an arithmetic number, because the mean of its divisors is an integer number (35318745).

Almost surely, 2^140561273 is an apocalyptic number.

It is an amenable number.

140561273 is a deficient number, since it is larger than the sum of its proper divisors (713707).

140561273 is an equidigital number, since it uses as much as digits as its factorization.

140561273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713706.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 140561273 is about 11855.8539549035. The cubic root of 140561273 is about 519.9423913004.

The spelling of 140561273 in words is "one hundred forty million, five hundred sixty-one thousand, two hundred seventy-three".