140642705 has 8 divisors (see below), whose sum is σ = 192881472. Its totient is φ = 96440688.

The previous prime is 140642701. The next prime is 140642707. The reversal of 140642705 is 507246041.

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 140642705 - 2² = 140642701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140642701) 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, 2009147 + ... + 2009216.

It is an arithmetic number, because the mean of its divisors is an integer number (24110184).

Almost surely, 2^140642705 is an apocalyptic number.

It is an amenable number.

140642705 is a deficient number, since it is larger than the sum of its proper divisors (52238767).

140642705 is an equidigital number, since it uses as much as digits as its factorization.

140642705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4018375.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 140642705 is about 11859.2877104824. The cubic root of 140642705 is about 520.0427787785.

Adding to 140642705 its reverse (507246041), we get a palindrome (647888746).

The spelling of 140642705 in words is "one hundred forty million, six hundred forty-two thousand, seven hundred five".