42507980 has 24 divisors (see below), whose sum is σ = 91445760. Its totient is φ = 16588160.

The previous prime is 42507977. The next prime is 42507991. The reversal of 42507980 is 8970524.

It is a happy number.

42507980 is nontrivially palindromic in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 42507980.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25100 + ... + 26739.

It is an arithmetic number, because the mean of its divisors is an integer number (3810240).

Almost surely, 2^42507980 is an apocalyptic number.

It is an amenable number.

42507980 is an abundant number, since it is smaller than the sum of its proper divisors (48937780).

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

42507980 is a wasteful number, since it uses less digits than its factorization.

42507980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51889 (or 51887 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 42507980 is about 6519.8144145367. The cubic root of 42507980 is about 348.9984428082.

The spelling of 42507980 in words is "forty-two million, five hundred seven thousand, nine hundred eighty".