140245705 has 8 divisors (see below), whose sum is σ = 173723904. Its totient is φ = 108577200.

The previous prime is 140245627. The next prime is 140245709. The reversal of 140245705 is 507542041.

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

It is not a de Polignac number, because 140245705 - 2²¹ = 138148553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140245709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452251 + ... + 452560.

It is an arithmetic number, because the mean of its divisors is an integer number (21715488).

Almost surely, 2^140245705 is an apocalyptic number.

It is an amenable number.

140245705 is a deficient number, since it is larger than the sum of its proper divisors (33478199).

140245705 is an equidigital number, since it uses as much as digits as its factorization.

140245705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904847.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 140245705 is about 11842.5379458966. The cubic root of 140245705 is about 519.5529997373.

Adding to 140245705 its reverse (507542041), we get a palindrome (647787746).

The spelling of 140245705 in words is "one hundred forty million, two hundred forty-five thousand, seven hundred five".