742848517 has 2 divisors, whose sum is σ = 742848518. Its totient is φ = 742848516.

The previous prime is 742848487. The next prime is 742848569. The reversal of 742848517 is 715848247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 555733476 + 187115041 = 23574^2 + 13679^2 .

It is an emirp because it is prime and its reverse (715848247) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742848517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742848017) 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 as a sum of consecutive naturals, namely, 371424258 + 371424259.

It is an arithmetic number, because the mean of its divisors is an integer number (371424259).

Almost surely, 2^742848517 is an apocalyptic number.

It is an amenable number.

742848517 is a deficient number, since it is larger than the sum of its proper divisors (1).

742848517 is an equidigital number, since it uses as much as digits as its factorization.

742848517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 501760, while the sum is 46.

The square root of 742848517 is about 27255.2475130937. The cubic root of 742848517 is about 905.6632672247.

It can be divided in two parts, 7428 and 48517, that added together give a triangular number (55945 = T₃₃₄).

The spelling of 742848517 in words is "seven hundred forty-two million, eight hundred forty-eight thousand, five hundred seventeen".