140718881 has 8 divisors (see below), whose sum is σ = 145336320. Its totient is φ = 136144368.

The previous prime is 140718859. The next prime is 140718913. The reversal of 140718881 is 188817041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140718881 is a prime.

It is a super-2 number, since 2×140718881² = 39603606939784322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (140718581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4001 + ... + 17246.

It is an arithmetic number, because the mean of its divisors is an integer number (18167040).

Almost surely, 2^140718881 is an apocalyptic number.

It is an amenable number.

140718881 is a deficient number, since it is larger than the sum of its proper divisors (4617439).

140718881 is a wasteful number, since it uses less digits than its factorization.

140718881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21463.

The product of its (nonzero) digits is 14336, while the sum is 38.

The square root of 140718881 is about 11862.4989357218. The cubic root of 140718881 is about 520.1366517092.

The spelling of 140718881 in words is "one hundred forty million, seven hundred eighteen thousand, eight hundred eighty-one".