742428 has 36 divisors (see below), whose sum is σ = 1926288. Its totient is φ = 240960.

The previous prime is 742409. The next prime is 742439. The reversal of 742428 is 824247.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1225 + ... + 1727.

It is an arithmetic number, because the mean of its divisors is an integer number (53508).

2⁷⁴²⁴²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 742428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (963144).

742428 is an abundant number, since it is smaller than the sum of its proper divisors (1183860).

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

742428 is a wasteful number, since it uses less digits than its factorization.

742428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 549 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 742428 is about 861.6426173304. The cubic root of 742428 is about 90.5492340188.

The spelling of 742428 in words is "seven hundred forty-two thousand, four hundred twenty-eight".