139028743 has 8 divisors (see below), whose sum is σ = 158961312. Its totient is φ = 119114016.

The previous prime is 139028741. The next prime is 139028749. The reversal of 139028743 is 347820931.

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

It is not a de Polignac number, because 139028743 - 2¹ = 139028741 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 (139028741) 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, 28521 + ... + 33037.

It is an arithmetic number, because the mean of its divisors is an integer number (19870164).

Almost surely, 2^139028743 is an apocalyptic number.

139028743 is a deficient number, since it is larger than the sum of its proper divisors (19932569).

139028743 is an equidigital number, since it uses as much as digits as its factorization.

139028743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8921.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 139028743 is about 11791.0450342622. The cubic root of 139028743 is about 518.0458497104.

The spelling of 139028743 in words is "one hundred thirty-nine million, twenty-eight thousand, seven hundred forty-three".