42503144 has 32 divisors (see below), whose sum is σ = 81081000. Its totient is φ = 20885760.

The previous prime is 42503141. The next prime is 42503147. The reversal of 42503144 is 44130524.

It is an interprime number because it is at equal distance from previous prime (42503141) and next prime (42503147).

It can be written as a sum of positive squares in 4 ways, for example, as 27772900 + 14730244 = 5270^2 + 3838^2 .

It is not an unprimeable number, because it can be changed into a prime (42503141) 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, 215654 + ... + 215850.

Almost surely, 2^42503144 is an apocalyptic number.

It is an amenable number.

42503144 is a deficient number, since it is larger than the sum of its proper divisors (38577856).

42503144 is a wasteful number, since it uses less digits than its factorization.

42503144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 42503144 is about 6519.4435345358. The cubic root of 42503144 is about 348.9852074857.

Adding to 42503144 its reverse (44130524), we get a palindrome (86633668).

The spelling of 42503144 in words is "forty-two million, five hundred three thousand, one hundred forty-four".