42430528 has 56 divisors (see below), whose sum is σ = 98096832. Its totient is φ = 17831424.

The previous prime is 42430517. The next prime is 42430543. The reversal of 42430528 is 82503424.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 42430496 and 42430505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22851 + ... + 24637.

Almost surely, 2^42430528 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 42430528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49048416).

42430528 is an abundant number, since it is smaller than the sum of its proper divisors (55666304).

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

42430528 is a wasteful number, since it uses less digits than its factorization.

42430528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 42430528 is about 6513.8719668105. The cubic root of 42430528 is about 348.7863488190.

The spelling of 42430528 in words is "forty-two million, four hundred thirty thousand, five hundred twenty-eight".