139019143 has 4 divisors (see below), whose sum is σ = 146335960. Its totient is φ = 131702328.

The previous prime is 139019141. The next prime is 139019161. The reversal of 139019143 is 341910931.

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 139019143 - 2¹ = 139019141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139019141) 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 3 ways as a sum of consecutive naturals, for example, 3658380 + ... + 3658417.

It is an arithmetic number, because the mean of its divisors is an integer number (36583990).

Almost surely, 2^139019143 is an apocalyptic number.

139019143 is a deficient number, since it is larger than the sum of its proper divisors (7316817).

139019143 is an equidigital number, since it uses as much as digits as its factorization.

139019143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7316816.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 139019143 is about 11790.6379386359. The cubic root of 139019143 is about 518.0339256662.

The spelling of 139019143 in words is "one hundred thirty-nine million, nineteen thousand, one hundred forty-three".