140617971 has 24 divisors (see below), whose sum is σ = 225587760. Its totient is φ = 86531328.

The previous prime is 140617949. The next prime is 140617979. The reversal of 140617971 is 179716041.

It is not a de Polignac number, because 140617971 - 2⁶ = 140617907 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (140617979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10846 + ... + 19971.

It is an arithmetic number, because the mean of its divisors is an integer number (9399490).

Almost surely, 2^140617971 is an apocalyptic number.

140617971 is a deficient number, since it is larger than the sum of its proper divisors (84969789).

140617971 is a wasteful number, since it uses less digits than its factorization.

140617971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30852 (or 30833 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 140617971 is about 11858.2448532656. The cubic root of 140617971 is about 520.0122913761.

The spelling of 140617971 in words is "one hundred forty million, six hundred seventeen thousand, nine hundred seventy-one".