140127945 has 16 divisors (see below), whose sum is σ = 236005440. Its totient is φ = 70801344.

The previous prime is 140127931. The next prime is 140127947. The reversal of 140127945 is 549721041.

It is a happy number.

It is not a de Polignac number, because 140127945 - 2⁷ = 140127817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140127947) 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 15 ways as a sum of consecutive naturals, for example, 245554 + ... + 246123.

It is an arithmetic number, because the mean of its divisors is an integer number (14750340).

Almost surely, 2^140127945 is an apocalyptic number.

140127945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140127945 is a deficient number, since it is larger than the sum of its proper divisors (95877495).

140127945 is a wasteful number, since it uses less digits than its factorization.

140127945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491704.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 140127945 is about 11837.5649945417. The cubic root of 140127945 is about 519.4075414656.

Adding to 140127945 its reverse (549721041), we get a palindrome (689848986).

The spelling of 140127945 in words is "one hundred forty million, one hundred twenty-seven thousand, nine hundred forty-five".