42995780 has 12 divisors (see below), whose sum is σ = 90291180. Its totient is φ = 17198304.

The previous prime is 42995779. The next prime is 42995807. The reversal of 42995780 is 8759924.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30492484 + 12503296 = 5522^2 + 3536^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074875 + ... + 1074914.

It is an arithmetic number, because the mean of its divisors is an integer number (7524265).

Almost surely, 2^42995780 is an apocalyptic number.

It is an amenable number.

42995780 is an abundant number, since it is smaller than the sum of its proper divisors (47295400).

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

42995780 is a wasteful number, since it uses less digits than its factorization.

42995780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149798 (or 2149796 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 42995780 is about 6557.1167444236. The cubic root of 42995780 is about 350.3283449352.

The spelling of 42995780 in words is "forty-two million, nine hundred ninety-five thousand, seven hundred eighty".