42530144 has 12 divisors (see below), whose sum is σ = 83731284. Its totient is φ = 21265056.

The previous prime is 42530119. The next prime is 42530179. The reversal of 42530144 is 44103524.

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 as a sum of consecutive naturals, namely, 664502 + ... + 664565.

It is an arithmetic number, because the mean of its divisors is an integer number (6977607).

Almost surely, 2^42530144 is an apocalyptic number.

It is an amenable number.

42530144 is a deficient number, since it is larger than the sum of its proper divisors (41201140).

42530144 is a wasteful number, since it uses less digits than its factorization.

42530144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329077 (or 1329069 counting only the distinct ones).

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

The square root of 42530144 is about 6521.5139346627. The cubic root of 42530144 is about 349.0590891267.

Adding to 42530144 its reverse (44103524), we get a palindrome (86633668).

The spelling of 42530144 in words is "forty-two million, five hundred thirty thousand, one hundred forty-four".