742859839 has 4 divisors (see below), whose sum is σ = 743698224. Its totient is φ = 742021456.

The previous prime is 742859837. The next prime is 742859849. The reversal of 742859839 is 938958247.

742859839 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, and also an emirpimes, since its reverse is a distinct semiprime: 938958247 = 1009 ⋅930583.

It is a cyclic number.

It is not a de Polignac number, because 742859839 - 2¹ = 742859837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 742859839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742859833) 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, 417862 + ... + 419635.

It is an arithmetic number, because the mean of its divisors is an integer number (185924556).

Almost surely, 2^742859839 is an apocalyptic number.

742859839 is a deficient number, since it is larger than the sum of its proper divisors (838385).

742859839 is an equidigital number, since it uses as much as digits as its factorization.

742859839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838384.

The product of its digits is 4354560, while the sum is 55.

The square root of 742859839 is about 27255.4552154243. The cubic root of 742859839 is about 905.6678683725.

The spelling of 742859839 in words is "seven hundred forty-two million, eight hundred fifty-nine thousand, eight hundred thirty-nine".