140859681 has 8 divisors (see below), whose sum is σ = 189164640. Its totient is φ = 93230592.

The previous prime is 140859647. The next prime is 140859689. The reversal of 140859681 is 186958041.

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

It is not a de Polignac number, because 140859681 - 2¹⁵ = 140826913 is a prime.

It is a super-2 number, since 2×140859681² = 39682899462843522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140859689) 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, 168480 + ... + 169313.

It is an arithmetic number, because the mean of its divisors is an integer number (23645580).

Almost surely, 2^140859681 is an apocalyptic number.

It is an amenable number.

140859681 is a deficient number, since it is larger than the sum of its proper divisors (48304959).

140859681 is a wasteful number, since it uses less digits than its factorization.

140859681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337935.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 140859681 is about 11868.4321205457. The cubic root of 140859681 is about 520.3100727119.

The spelling of 140859681 in words is "one hundred forty million, eight hundred fifty-nine thousand, six hundred eighty-one".