140545105 has 4 divisors (see below), whose sum is σ = 168654132. Its totient is φ = 112436080.

The previous prime is 140545099. The next prime is 140545121. The reversal of 140545105 is 501545041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501545041 = 1039 ⋅482719.

It can be written as a sum of positive squares in 2 ways, for example, as 64384576 + 76160529 = 8024^2 + 8727^2 .

It is not a de Polignac number, because 140545105 - 2⁵ = 140545073 is a prime.

It is a super-2 number, since 2×140545105² = 39505853078922050, which contains 22 as substring.

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 140545105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14054506 + ... + 14054515.

It is an arithmetic number, because the mean of its divisors is an integer number (42163533).

Almost surely, 2^140545105 is an apocalyptic number.

It is an amenable number.

140545105 is a deficient number, since it is larger than the sum of its proper divisors (28109027).

140545105 is an equidigital number, since it uses as much as digits as its factorization.

140545105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28109026.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 140545105 is about 11855.1720780426. The cubic root of 140545105 is about 519.9224551527.

The spelling of 140545105 in words is "one hundred forty million, five hundred forty-five thousand, one hundred five".