140815087 has 4 divisors (see below), whose sum is σ = 160931536. Its totient is φ = 120698640.

The previous prime is 140815079. The next prime is 140815139. The reversal of 140815087 is 780518041.

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

It is a cyclic number.

It is not a de Polignac number, because 140815087 - 2³ = 140815079 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 (140815487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10058214 + ... + 10058227.

It is an arithmetic number, because the mean of its divisors is an integer number (40232884).

Almost surely, 2^140815087 is an apocalyptic number.

140815087 is a deficient number, since it is larger than the sum of its proper divisors (20116449).

140815087 is an equidigital number, since it uses as much as digits as its factorization.

140815087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20116448.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 140815087 is about 11866.5532906569. The cubic root of 140815087 is about 520.2551595382.

The spelling of 140815087 in words is "one hundred forty million, eight hundred fifteen thousand, eighty-seven".