140197971 has 8 divisors (see below), whose sum is σ = 187073424. Its totient is φ = 93393920.

The previous prime is 140197961. The next prime is 140198053. The reversal of 140197971 is 179791041.

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 140197971 - 2¹⁵ = 140165203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140197961) 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, 13086 + ... + 21251.

It is an arithmetic number, because the mean of its divisors is an integer number (23384178).

Almost surely, 2^140197971 is an apocalyptic number.

140197971 is a deficient number, since it is larger than the sum of its proper divisors (46875453).

140197971 is a wasteful number, since it uses less digits than its factorization.

140197971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35701.

The product of its (nonzero) digits is 15876, while the sum is 39.

The square root of 140197971 is about 11840.5224124614. The cubic root of 140197971 is about 519.4940480636.

The spelling of 140197971 in words is "one hundred forty million, one hundred ninety-seven thousand, nine hundred seventy-one".