742247 has 4 divisors (see below), whose sum is σ = 809736. Its totient is φ = 674760.

The previous prime is 742243. The next prime is 742253.

742247 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 742247 - 2² = 742243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742241) 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, 33728 + ... + 33749.

It is an arithmetic number, because the mean of its divisors is an integer number (202434).

2⁷⁴²²⁴⁷ is an apocalyptic number.

742247 is a deficient number, since it is larger than the sum of its proper divisors (67489).

742247 is a wasteful number, since it uses less digits than its factorization.

742247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67488.

The product of its digits is 3136, while the sum is 26.

The square root of 742247 is about 861.5375789831. The cubic root of 742247 is about 90.5418749468.

It can be divided in two parts, 742 and 247, that added together give a palindrome (989).

The spelling of 742247 in words is "seven hundred forty-two thousand, two hundred forty-seven", and thus it is an iban number.