42001535 has 16 divisors (see below), whose sum is σ = 51546240. Its totient is φ = 32847360.

The previous prime is 42001529. The next prime is 42001573. The reversal of 42001535 is 53510024.

42001535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42001535 - 2⁶ = 42001471 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 44165 + ... + 45105.

It is an arithmetic number, because the mean of its divisors is an integer number (3221640).

Almost surely, 2^42001535 is an apocalyptic number.

42001535 is a deficient number, since it is larger than the sum of its proper divisors (9544705).

42001535 is a wasteful number, since it uses less digits than its factorization.

42001535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 42001535 is about 6480.8591251469. The cubic root of 42001535 is about 347.6068991203.

Adding to 42001535 its reverse (53510024), we get a palindrome (95511559).

The spelling of 42001535 in words is "forty-two million, one thousand, five hundred thirty-five".