248139043 has 4 divisors (see below), whose sum is σ = 248704720. Its totient is φ = 247573368.

The previous prime is 248139037. The next prime is 248139061. The reversal of 248139043 is 340931842.

248139043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 248139043 - 2⁹ = 248138531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248139083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282180 + ... + 283057.

It is an arithmetic number, because the mean of its divisors is an integer number (62176180).

Almost surely, 2^248139043 is an apocalyptic number.

248139043 is a deficient number, since it is larger than the sum of its proper divisors (565677).

248139043 is an equidigital number, since it uses as much as digits as its factorization.

248139043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565676.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 248139043 is about 15752.4297490895. The cubic root of 248139043 is about 628.3935243993.

It can be divided in two parts, 24813 and 9043, that added together give a square (33856 = 184²).

The spelling of 248139043 in words is "two hundred forty-eight million, one hundred thirty-nine thousand, forty-three".