742065387217 has 32 divisors (see below), whose sum is σ = 926758897920. Its totient is φ = 577242132480.

The previous prime is 742065387187. The next prime is 742065387257. The reversal of 742065387217 is 712783560247.

742065387217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742065387217 is a prime.

It is a super-2 number, since 2×742065387217² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742065387257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182907853 + ... + 182911909.

It is an arithmetic number, because the mean of its divisors is an integer number (28961215560).

Almost surely, 2^742065387217 is an apocalyptic number.

742065387217 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

742065387217 is a deficient number, since it is larger than the sum of its proper divisors (184693510703).

742065387217 is a wasteful number, since it uses less digits than its factorization.

742065387217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7561.

The product of its (nonzero) digits is 3951360, while the sum is 52.

The spelling of 742065387217 in words is "seven hundred forty-two billion, sixty-five million, three hundred eighty-seven thousand, two hundred seventeen".