742939 has 4 divisors (see below), whose sum is σ = 750256. Its totient is φ = 735624.

The previous prime is 742913. The next prime is 742943. The reversal of 742939 is 939247.

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 742939 - 2¹¹ = 740891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742909) 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, 3504 + ... + 3709.

It is an arithmetic number, because the mean of its divisors is an integer number (187564).

2⁷⁴²⁹³⁹ is an apocalyptic number.

742939 is a deficient number, since it is larger than the sum of its proper divisors (7317).

742939 is a wasteful number, since it uses less digits than its factorization.

742939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7316.

The product of its digits is 13608, while the sum is 34.

The square root of 742939 is about 861.9390929758. The cubic root of 742939 is about 90.5700037307.

It can be divided in two parts, 742 and 939, that added together give a square (1681 = 41²).

The spelling of 742939 in words is "seven hundred forty-two thousand, nine hundred thirty-nine".