742317 has 4 divisors (see below), whose sum is σ = 989760. Its totient is φ = 494876.

The previous prime is 742307. The next prime is 742327. The reversal of 742317 is 713247.

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, and also an emirpimes, since its reverse is a distinct semiprime: 713247 = 3 ⋅237749.

It is an interprime number because it is at equal distance from previous prime (742307) and next prime (742327).

It is a cyclic number.

It is not a de Polignac number, because 742317 - 2⁶ = 742253 is a prime.

It is a D-number.

742317 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742307) 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, 123717 + ... + 123722.

It is an arithmetic number, because the mean of its divisors is an integer number (247440).

2⁷⁴²³¹⁷ is an apocalyptic number.

It is an amenable number.

742317 is a deficient number, since it is larger than the sum of its proper divisors (247443).

742317 is a wasteful number, since it uses less digits than its factorization.

742317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247442.

The product of its digits is 1176, while the sum is 24.

The square root of 742317 is about 861.5782030669. The cubic root of 742317 is about 90.5447211386.

It can be divided in two parts, 7 and 42317, that added together give a palindrome (42324).

The spelling of 742317 in words is "seven hundred forty-two thousand, three hundred seventeen", and thus it is an iban number.