42528039 has 4 divisors (see below), whose sum is σ = 56704056. Its totient is φ = 28352024.

The previous prime is 42528037. The next prime is 42528043. The reversal of 42528039 is 93082524.

It is a happy number.

42528039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42528039 - 2¹ = 42528037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42528037) 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 3 ways as a sum of consecutive naturals, for example, 7088004 + ... + 7088009.

It is an arithmetic number, because the mean of its divisors is an integer number (14176014).

Almost surely, 2^42528039 is an apocalyptic number.

42528039 is a deficient number, since it is larger than the sum of its proper divisors (14176017).

42528039 is a wasteful number, since it uses less digits than its factorization.

42528039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14176016.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 42528039 is about 6521.3525437596. The cubic root of 42528039 is about 349.0533302191.

It can be divided in two parts, 425280 and 39, that multiplied together give a triangular number (16585920 = T₅₇₅₉).

The spelling of 42528039 in words is "forty-two million, five hundred twenty-eight thousand, thirty-nine".