140787145 has 4 divisors (see below), whose sum is σ = 168944580. Its totient is φ = 112629712.

The previous prime is 140787113. The next prime is 140787161. The reversal of 140787145 is 541787041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107931321 + 32855824 = 10389^2 + 5732^2 .

It is a cyclic number.

It is not a de Polignac number, because 140787145 - 2⁵ = 140787113 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14078710 + ... + 14078719.

It is an arithmetic number, because the mean of its divisors is an integer number (42236145).

Almost surely, 2^140787145 is an apocalyptic number.

It is an amenable number.

140787145 is a deficient number, since it is larger than the sum of its proper divisors (28157435).

140787145 is an equidigital number, since it uses as much as digits as its factorization.

140787145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28157434.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 140787145 is about 11865.3758895367. The cubic root of 140787145 is about 520.2207457747.

The spelling of 140787145 in words is "one hundred forty million, seven hundred eighty-seven thousand, one hundred forty-five".