742659839 has 16 divisors (see below), whose sum is σ = 778342656. Its totient is φ = 708526080.

The previous prime is 742659823. The next prime is 742659881. The reversal of 742659839 is 938956247.

It is a happy number.

It is not a de Polignac number, because 742659839 - 2⁴ = 742659823 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 (742659809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2889599 + ... + 2889855.

It is an arithmetic number, because the mean of its divisors is an integer number (48646416).

Almost surely, 2^742659839 is an apocalyptic number.

742659839 is a deficient number, since it is larger than the sum of its proper divisors (35682817).

742659839 is an frugal number, since it uses more digits than its factorization.

742659839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 385 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 53.

The square root of 742659839 is about 27251.7859781703. The cubic root of 742659839 is about 905.5865834867.

The spelling of 742659839 in words is "seven hundred forty-two million, six hundred fifty-nine thousand, eight hundred thirty-nine".