42003015 has 32 divisors (see below), whose sum is σ = 71124480. Its totient is φ = 21108096.

The previous prime is 42002999. The next prime is 42003023. The reversal of 42003015 is 51030024.

It is not a de Polignac number, because 42003015 - 2⁴ = 42002999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 42002985 and 42003003.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 83254 + ... + 83756.

It is an arithmetic number, because the mean of its divisors is an integer number (2222640).

Almost surely, 2^42003015 is an apocalyptic number.

42003015 is a deficient number, since it is larger than the sum of its proper divisors (29121465).

42003015 is a wasteful number, since it uses less digits than its factorization.

42003015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823.

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

The square root of 42003015 is about 6480.9733065335. The cubic root of 42003015 is about 347.6109819248.

Adding to 42003015 its reverse (51030024), we get a palindrome (93033039).

The spelling of 42003015 in words is "forty-two million, three thousand, fifteen".