42003501 has 8 divisors (see below), whose sum is σ = 56131200. Its totient is φ = 27939072.

The previous prime is 42003491. The next prime is 42003539. The reversal of 42003501 is 10530024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42003501 - 2⁵ = 42003469 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42003551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14245 + ... + 16938.

It is an arithmetic number, because the mean of its divisors is an integer number (7016400).

Almost surely, 2^42003501 is an apocalyptic number.

It is an amenable number.

42003501 is a deficient number, since it is larger than the sum of its proper divisors (14127699).

42003501 is a wasteful number, since it uses less digits than its factorization.

42003501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31635.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 42003501 is about 6481.0108007933. The cubic root of 42003501 is about 347.6123226086.

Adding to 42003501 its reverse (10530024), we get a palindrome (52533525).

The spelling of 42003501 in words is "forty-two million, three thousand, five hundred one".