742827779 has 8 divisors (see below), whose sum is σ = 778971360. Its totient is φ = 707386176.

The previous prime is 742827719. The next prime is 742827823. The reversal of 742827779 is 977728247.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 742827779 - 2¹⁶ = 742762243 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 742827779.

It is not an unprimeable number, because it can be changed into a prime (742827719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173327 + ... + 177560.

It is an arithmetic number, because the mean of its divisors is an integer number (97371420).

Almost surely, 2^742827779 is an apocalyptic number.

742827779 is a deficient number, since it is larger than the sum of its proper divisors (36143581).

742827779 is a wasteful number, since it uses less digits than its factorization.

742827779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350989.

The product of its digits is 2765952, while the sum is 53.

The square root of 742827779 is about 27254.8670699382. The cubic root of 742827779 is about 905.6548393873.

The spelling of 742827779 in words is "seven hundred forty-two million, eight hundred twenty-seven thousand, seven hundred seventy-nine".