42040500 has 48 divisors (see below), whose sum is σ = 122426304. Its totient is φ = 11210400.

The previous prime is 42040469. The next prime is 42040601. The reversal of 42040500 is 504024.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 42040500.

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, 12514 + ... + 15513.

It is an arithmetic number, because the mean of its divisors is an integer number (2550548).

Almost surely, 2^42040500 is an apocalyptic number.

It is an amenable number.

42040500 is an abundant number, since it is smaller than the sum of its proper divisors (80385804).

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

42040500 is a wasteful number, since it uses less digits than its factorization.

42040500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28049 (or 28037 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 42040500 is about 6483.8645883454. The cubic root of 42040500 is about 347.7143580227.

Adding to 42040500 its reverse (504024), we get a palindrome (42544524).

The spelling of 42040500 in words is "forty-two million, forty thousand, five hundred".