742214742809 has 4 divisors (see below), whose sum is σ = 767808354660. Its totient is φ = 716621130960.

The previous prime is 742214742649. The next prime is 742214742821. The reversal of 742214742809 is 908247412247.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 419454408409 + 322760334400 = 647653^2 + 568120^2 .

It is a cyclic number.

It is not a de Polignac number, because 742214742809 - 2¹⁶ = 742214677273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742214742859) 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, 12796805882 + ... + 12796805939.

It is an arithmetic number, because the mean of its divisors is an integer number (191952088665).

Almost surely, 2^742214742809 is an apocalyptic number.

It is an amenable number.

742214742809 is a deficient number, since it is larger than the sum of its proper divisors (25593611851).

742214742809 is a wasteful number, since it uses less digits than its factorization.

742214742809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25593611850.

The product of its (nonzero) digits is 1806336, while the sum is 50.

The spelling of 742214742809 in words is "seven hundred forty-two billion, two hundred fourteen million, seven hundred forty-two thousand, eight hundred nine".