42044520 has 64 divisors (see below), whose sum is σ = 144155520. Its totient is φ = 9609984.

The previous prime is 42044501. The next prime is 42044531. The reversal of 42044520 is 2544024.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24187 + ... + 25866.

It is an arithmetic number, because the mean of its divisors is an integer number (2252430).

Almost surely, 2^42044520 is an apocalyptic number.

42044520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42044520 is an abundant number, since it is smaller than the sum of its proper divisors (102111000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42044520 is a wasteful number, since it uses less digits than its factorization.

42044520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50074 (or 50070 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 42044520 is about 6484.1745812401. The cubic root of 42044520 is about 347.7254407260.

Adding to 42044520 its reverse (2544024), we get a palindrome (44588544).

The spelling of 42044520 in words is "forty-two million, forty-four thousand, five hundred twenty".