140427587171 has 4 divisors (see below), whose sum is σ = 141357571344. Its totient is φ = 139497603000.

The previous prime is 140427587149. The next prime is 140427587189. The reversal of 140427587171 is 171785724041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171785724041 = 14813 ⋅11596957.

It is a cyclic number.

It is not a de Polignac number, because 140427587171 - 2⁶ = 140427587107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140427587071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464991860 + ... + 464992161.

It is an arithmetic number, because the mean of its divisors is an integer number (35339392836).

Almost surely, 2^140427587171 is an apocalyptic number.

140427587171 is a deficient number, since it is larger than the sum of its proper divisors (929984173).

140427587171 is an equidigital number, since it uses as much as digits as its factorization.

140427587171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929984172.

The product of its (nonzero) digits is 439040, while the sum is 47.

The spelling of 140427587171 in words is "one hundred forty billion, four hundred twenty-seven million, five hundred eighty-seven thousand, one hundred seventy-one".