140870971 has 4 divisors (see below), whose sum is σ = 141321352. Its totient is φ = 140420592.

The previous prime is 140870969. The next prime is 140870987. The reversal of 140870971 is 179078041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140870971 - 2¹ = 140870969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140870971.

It is not an unprimeable number, because it can be changed into a prime (140870911) 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 3 ways as a sum of consecutive naturals, for example, 224721 + ... + 225346.

It is an arithmetic number, because the mean of its divisors is an integer number (35330338).

Almost surely, 2^140870971 is an apocalyptic number.

140870971 is a deficient number, since it is larger than the sum of its proper divisors (450381).

140870971 is an equidigital number, since it uses as much as digits as its factorization.

140870971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450380.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 140870971 is about 11868.9077425010. The cubic root of 140870971 is about 520.3239734102.

The spelling of 140870971 in words is "one hundred forty million, eight hundred seventy thousand, nine hundred seventy-one".