140981871 has 8 divisors (see below), whose sum is σ = 188034480. Its totient is φ = 93958592.

The previous prime is 140981861. The next prime is 140981879. The reversal of 140981871 is 178189041.

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

It is a cyclic number.

It is not a de Polignac number, because 140981871 - 2⁵ = 140981839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140981879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9235 + ... + 19163.

It is an arithmetic number, because the mean of its divisors is an integer number (23504310).

Almost surely, 2^140981871 is an apocalyptic number.

140981871 is a deficient number, since it is larger than the sum of its proper divisors (47052609).

140981871 is an equidigital number, since it uses as much as digits as its factorization.

140981871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14665.

The product of its (nonzero) digits is 16128, while the sum is 39.

The square root of 140981871 is about 11873.5786938901. The cubic root of 140981871 is about 520.4604784509.

The spelling of 140981871 in words is "one hundred forty million, nine hundred eighty-one thousand, eight hundred seventy-one".