42180030 has 24 divisors (see below), whose sum is σ = 109668312. Its totient is φ = 11247984.

The previous prime is 42180029. The next prime is 42180049. The reversal of 42180030 is 3008124.

It is a happy number.

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 = 42179985 and 42180012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234244 + ... + 234423.

It is an arithmetic number, because the mean of its divisors is an integer number (4569513).

Almost surely, 2^42180030 is an apocalyptic number.

42180030 is an abundant number, since it is smaller than the sum of its proper divisors (67488282).

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

42180030 is a wasteful number, since it uses less digits than its factorization.

42180030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468680 (or 468677 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 42180030 is about 6494.6154620578. The cubic root of 42180030 is about 348.0986145416.

Adding to 42180030 its reverse (3008124), we get a palindrome (45188154).

The spelling of 42180030 in words is "forty-two million, one hundred eighty thousand, thirty".