742556 has 12 divisors (see below), whose sum is σ = 1317792. Its totient is φ = 366048.

The previous prime is 742549. The next prime is 742559. The reversal of 742556 is 655247.

742556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam 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 742556.

It is not an unprimeable number, because it can be changed into a prime (742559) by changing a digit.

742556 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 980 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (109816).

2⁷⁴²⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

742556 is a deficient number, since it is larger than the sum of its proper divisors (575236).

742556 is a wasteful number, since it uses less digits than its factorization.

742556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620 (or 2618 counting only the distinct ones).

The product of its digits is 8400, while the sum is 29.

The square root of 742556 is about 861.7168908638. The cubic root of 742556 is about 90.5544375025.

The spelling of 742556 in words is "seven hundred forty-two thousand, five hundred fifty-six".