42504220 has 24 divisors (see below), whose sum is σ = 97373808. Its totient is φ = 15456000.

The previous prime is 42504181. The next prime is 42504239. The reversal of 42504220 is 2240524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96381 + ... + 96820.

It is an arithmetic number, because the mean of its divisors is an integer number (4057242).

Almost surely, 2^42504220 is an apocalyptic number.

It is an amenable number.

42504220 is an abundant number, since it is smaller than the sum of its proper divisors (54869588).

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

42504220 is a wasteful number, since it uses less digits than its factorization.

42504220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193221 (or 193219 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 42504220 is about 6519.5260563940. The cubic root of 42504220 is about 348.9881524044.

Adding to 42504220 its reverse (2240524), we get a palindrome (44744744).

It can be divided in two parts, 42504 and 220, that added together give a palindrome (42724).

The spelling of 42504220 in words is "forty-two million, five hundred four thousand, two hundred twenty".