742517 has 4 divisors (see below), whose sum is σ = 746016. Its totient is φ = 739020.

The previous prime is 742513. The next prime is 742519. The reversal of 742517 is 715247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 742517 - 2² = 742513 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 742517.

It is not an unprimeable number, because it can be changed into a prime (742513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1409 + ... + 1862.

It is an arithmetic number, because the mean of its divisors is an integer number (186504).

2⁷⁴²⁵¹⁷ is an apocalyptic number.

It is an amenable number.

742517 is a deficient number, since it is larger than the sum of its proper divisors (3499).

742517 is a wasteful number, since it uses less digits than its factorization.

742517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3498.

The product of its digits is 1960, while the sum is 26.

The square root of 742517 is about 861.6942613247. The cubic root of 742517 is about 90.5528521294.

It can be divided in two parts, 7 and 42517, that added together give a palindrome (42524).

The spelling of 742517 in words is "seven hundred forty-two thousand, five hundred seventeen".