42330420 has 72 divisors (see below), whose sum is σ = 140081760. Its totient is φ = 10261440.

The previous prime is 42330389. The next prime is 42330427. The reversal of 42330420 is 2403324.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 42330393 and 42330402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42330427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8710 + ... + 12669.

It is an arithmetic number, because the mean of its divisors is an integer number (1945580).

Almost surely, 2^42330420 is an apocalyptic number.

It is an amenable number.

42330420 is an abundant number, since it is smaller than the sum of its proper divisors (97751340).

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

42330420 is a wasteful number, since it uses less digits than its factorization.

42330420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21405 (or 21400 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 42330420 is about 6506.1832129137. The cubic root of 42330420 is about 348.5118310657.

Adding to 42330420 its reverse (2403324), we get a palindrome (44733744).

It can be divided in two parts, 423304 and 20, that added together give a palindrome (423324).

The spelling of 42330420 in words is "forty-two million, three hundred thirty thousand, four hundred twenty".