42032820 has 48 divisors (see below), whose sum is σ = 118052928. Its totient is φ = 11174400.

The previous prime is 42032779. The next prime is 42032849. The reversal of 42032820 is 2823024.

It is a congruent number.

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, 23187 + ... + 24933.

It is an arithmetic number, because the mean of its divisors is an integer number (2459436).

Almost surely, 2^42032820 is an apocalyptic number.

It is an amenable number.

42032820 is an abundant number, since it is smaller than the sum of its proper divisors (76020108).

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

42032820 is a wasteful number, since it uses less digits than its factorization.

42032820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 42032820 is about 6483.2723219066. The cubic root of 42032820 is about 347.6931831326.

Adding to 42032820 its reverse (2823024), we get a palindrome (44855844).

The spelling of 42032820 in words is "forty-two million, thirty-two thousand, eight hundred twenty".