42204820 has 24 divisors (see below), whose sum is σ = 101291904. Its totient is φ = 14470176.

The previous prime is 42204809. The next prime is 42204821. The reversal of 42204820 is 2840224.

It is a junction number, because it is equal to n+sod(n) for n = 42204791 and 42204800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42204821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150592 + ... + 150871.

It is an arithmetic number, because the mean of its divisors is an integer number (4220496).

Almost surely, 2^42204820 is an apocalyptic number.

It is an amenable number.

42204820 is an abundant number, since it is smaller than the sum of its proper divisors (59087084).

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

42204820 is a wasteful number, since it uses less digits than its factorization.

42204820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301479 (or 301477 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 42204820 is about 6496.5236857877. The cubic root of 42204820 is about 348.1667958955.

The spelling of 42204820 in words is "forty-two million, two hundred four thousand, eight hundred twenty".