42021024 has 24 divisors (see below), whose sum is σ = 110305440. Its totient is φ = 14006976.

The previous prime is 42021017. The next prime is 42021037. The reversal of 42021024 is 42012024.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 42020994 and 42021012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218764 + ... + 218955.

It is an arithmetic number, because the mean of its divisors is an integer number (4596060).

Almost surely, 2^42021024 is an apocalyptic number.

It is an amenable number.

42021024 is an abundant number, since it is smaller than the sum of its proper divisors (68284416).

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

42021024 is a wasteful number, since it uses less digits than its factorization.

42021024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437732 (or 437724 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 42021024 is about 6482.3625322871. The cubic root of 42021024 is about 347.6606548011.

Adding to 42021024 its reverse (42012024), we get a palindrome (84033048).

The spelling of 42021024 in words is "forty-two million, twenty-one thousand, twenty-four".