742518 has 48 divisors (see below), whose sum is σ = 1886976. Its totient is φ = 206640.

The previous prime is 742513. The next prime is 742519. The reversal of 742518 is 815247.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 742491 and 742500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8905 + ... + 8987.

It is an arithmetic number, because the mean of its divisors is an integer number (39312).

2⁷⁴²⁵¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 742518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943488).

742518 is an abundant number, since it is smaller than the sum of its proper divisors (1144458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

742518 is a wasteful number, since it uses less digits than its factorization.

742518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 166 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 742518 is about 861.6948415768. The cubic root of 742518 is about 90.5528927807.

The spelling of 742518 in words is "seven hundred forty-two thousand, five hundred eighteen".