• 742 can be written using four 4's:
742 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.
742 is an esthetic number in base 4 and base 6, because in such bases its adjacent digits differ by 1.
It is a sphenic number, since it is the product of 3 distinct primes.
742 is a repfigit number.
742 is strictly pandigital in base 5.
It is a plaindrome in base 8 and base 15.
It is a nialpdrome in base 7 and base 10.
It is a congruent number.
742 is the 14-th decagonal number.
742 is a wasteful number, since it uses less digits than its factorization.
742 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 62.
The square root of 742 is about 27.2396769438. The cubic root of 742 is about 9.0531830526.
Subtracting from 742 its sum of digits (13), we obtain a 6-th power (729 = 36).
Subtracting from 742 its product of digits (56), we obtain a palindrome (686).
Adding to 742 its reverse (247), we get a palindrome (989).