140252645 has 8 divisors (see below), whose sum is σ = 181249656. Its totient is φ = 103571136.

The previous prime is 140252633. The next prime is 140252647. The reversal of 140252645 is 546252041.

It can be written as a sum of positive squares in 4 ways, for example, as 7150276 + 133102369 = 2674^2 + 11537^2 .

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 140252645 - 2⁸ = 140252389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140252647) 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 7 ways as a sum of consecutive naturals, for example, 1078802 + ... + 1078931.

It is an arithmetic number, because the mean of its divisors is an integer number (22656207).

Almost surely, 2^140252645 is an apocalyptic number.

It is an amenable number.

140252645 is a deficient number, since it is larger than the sum of its proper divisors (40997011).

140252645 is a wasteful number, since it uses less digits than its factorization.

140252645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157751.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 140252645 is about 11842.8309537880. The cubic root of 140252645 is about 519.5615695502.

The spelling of 140252645 in words is "one hundred forty million, two hundred fifty-two thousand, six hundred forty-five".