742217 has 4 divisors (see below), whose sum is σ = 848256. Its totient is φ = 636180.

The previous prime is 742213. The next prime is 742219. The reversal of 742217 is 712247.

742217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 712247 = 131 ⋅5437.

It is a cyclic number.

It is not a de Polignac number, because 742217 - 2² = 742213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 742192 and 742201.

It is not an unprimeable number, because it can be changed into a prime (742211) 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, 53009 + ... + 53022.

It is an arithmetic number, because the mean of its divisors is an integer number (212064).

2⁷⁴²²¹⁷ is an apocalyptic number.

It is an amenable number.

742217 is a deficient number, since it is larger than the sum of its proper divisors (106039).

742217 is a wasteful number, since it uses less digits than its factorization.

742217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106038.

The product of its digits is 784, while the sum is 23.

The square root of 742217 is about 861.5201680750. The cubic root of 742217 is about 90.5406550955.

It can be divided in two parts, 742 and 217, that added together give a palindrome (959).

The spelling of 742217 in words is "seven hundred forty-two thousand, two hundred seventeen", and thus it is an iban number.