139860143 has 4 divisors (see below), whose sum is σ = 143271408. Its totient is φ = 136448880.

The previous prime is 139860103. The next prime is 139860167. The reversal of 139860143 is 341068931.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139860143 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 (139860103) 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, 1705571 + ... + 1705652.

It is an arithmetic number, because the mean of its divisors is an integer number (35817852).

Almost surely, 2^139860143 is an apocalyptic number.

139860143 is a deficient number, since it is larger than the sum of its proper divisors (3411265).

139860143 is an equidigital number, since it uses as much as digits as its factorization.

139860143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411264.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 139860143 is about 11826.2480525313. The cubic root of 139860143 is about 519.0764462319.

The spelling of 139860143 in words is "one hundred thirty-nine million, eight hundred sixty thousand, one hundred forty-three".