7428042 has 24 divisors (see below), whose sum is σ = 16317444. Its totient is φ = 2441664.

The previous prime is 7428037. The next prime is 7428049. The reversal of 7428042 is 2408247.

It can be written as a sum of positive squares in 2 ways, for example, as 7177041 + 251001 = 2679^2 + 501^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7427997 and 7428015.

It is not an unprimeable number, because it can be changed into a prime (7428049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1513 + ... + 4140.

Almost surely, 2^7428042 is an apocalyptic number.

7428042 is an abundant number, since it is smaller than the sum of its proper divisors (8889402).

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

7428042 is a wasteful number, since it uses less digits than its factorization.

7428042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5734 (or 5731 counting only the distinct ones).

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

The square root of 7428042 is about 2725.4434501563. The cubic root of 7428042 is about 195.1153558088.

The spelling of 7428042 in words is "seven million, four hundred twenty-eight thousand, forty-two".