42508120 has 32 divisors (see below), whose sum is σ = 97452720. Its totient is φ = 16681600.

The previous prime is 42508097. The next prime is 42508127. The reversal of 42508120 is 2180524.

It is a junction number, because it is equal to n+sod(n) for n = 42508091 and 42508100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42508127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7906 + ... + 12145.

Almost surely, 2^42508120 is an apocalyptic number.

42508120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42508120 is an abundant number, since it is smaller than the sum of its proper divisors (54944600).

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

42508120 is a wasteful number, since it uses less digits than its factorization.

42508120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20115 (or 20111 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 42508120 is about 6519.8251510297. The cubic root of 42508120 is about 348.9988259499.

Adding to 42508120 its reverse (2180524), we get a palindrome (44688644).

The spelling of 42508120 in words is "forty-two million, five hundred eight thousand, one hundred twenty".