742547 has 4 divisors (see below), whose sum is σ = 799680. Its totient is φ = 685416.

The previous prime is 742541. The next prime is 742549. The reversal of 742547 is 745247.

742547 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.

It is a cyclic number.

It is not a de Polignac number, because 742547 - 2⁴ = 742531 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 (742541) 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, 28547 + ... + 28572.

It is an arithmetic number, because the mean of its divisors is an integer number (199920).

2⁷⁴²⁵⁴⁷ is an apocalyptic number.

742547 is a deficient number, since it is larger than the sum of its proper divisors (57133).

742547 is a wasteful number, since it uses less digits than its factorization.

742547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57132.

The product of its digits is 7840, while the sum is 29.

The square root of 742547 is about 861.7116687152. The cubic root of 742547 is about 90.5540716521.

The spelling of 742547 in words is "seven hundred forty-two thousand, five hundred forty-seven".