7042428 has 36 divisors (see below), whose sum is σ = 18142488. Its totient is φ = 2302560.

The previous prime is 7042423. The next prime is 7042457. The reversal of 7042428 is 8242407.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7042421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63 + ... + 3753.

It is an arithmetic number, because the mean of its divisors is an integer number (503958).

Almost surely, 2^7042428 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 7042428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9071244).

7042428 is an abundant number, since it is smaller than the sum of its proper divisors (11100060).

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

7042428 is a wasteful number, since it uses less digits than its factorization.

7042428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3754 (or 3749 counting only the distinct ones).

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

The square root of 7042428 is about 2653.7573363064. The cubic root of 7042428 is about 191.6788250216.

The spelling of 7042428 in words is "seven million, forty-two thousand, four hundred twenty-eight".