42180124 has 12 divisors (see below), whose sum is σ = 84360304. Its totient is φ = 18077184.

The previous prime is 42180121. The next prime is 42180139. The reversal of 42180124 is 42108124.

42180124 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 42180095 and 42180104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42180121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753189 + ... + 753244.

Almost surely, 2^42180124 is an apocalyptic number.

It is an amenable number.

42180124 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42180124 is a wasteful number, since it uses less digits than its factorization.

42180124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506444 (or 1506442 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 42180124 is about 6494.6226988178. The cubic root of 42180124 is about 348.0988731256.

Adding to 42180124 its reverse (42108124), we get a palindrome (84288248).

The spelling of 42180124 in words is "forty-two million, one hundred eighty thousand, one hundred twenty-four".