140120065 has 8 divisors (see below), whose sum is σ = 168477480. Its totient is φ = 111873792.

The previous prime is 140120059. The next prime is 140120077. The reversal of 140120065 is 560021041.

It can be written as a sum of positive squares in 4 ways, for example, as 12362256 + 127757809 = 3516^2 + 11303^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140120065 - 2⁵ = 140120033 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24984 + ... + 30073.

It is an arithmetic number, because the mean of its divisors is an integer number (21059685).

Almost surely, 2^140120065 is an apocalyptic number.

It is an amenable number.

140120065 is a deficient number, since it is larger than the sum of its proper divisors (28357415).

140120065 is an equidigital number, since it uses as much as digits as its factorization.

140120065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55571.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 140120065 is about 11837.2321511407. The cubic root of 140120065 is about 519.3978051060.

The spelling of 140120065 in words is "one hundred forty million, one hundred twenty thousand, sixty-five".