139702971 has 8 divisors (see below), whose sum is σ = 186617104. Its totient is φ = 92962080.

The previous prime is 139702967. The next prime is 139702987. The reversal of 139702971 is 179207931.

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

It is not a de Polignac number, because 139702971 - 2² = 139702967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139702951) 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, 41416 + ... + 44661.

It is an arithmetic number, because the mean of its divisors is an integer number (23327138).

Almost surely, 2^139702971 is an apocalyptic number.

139702971 is a deficient number, since it is larger than the sum of its proper divisors (46914133).

139702971 is an equidigital number, since it uses as much as digits as its factorization.

139702971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86621.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 139702971 is about 11819.6011354022. The cubic root of 139702971 is about 518.8819308122.

The spelling of 139702971 in words is "one hundred thirty-nine million, seven hundred two thousand, nine hundred seventy-one".