42549860 has 12 divisors (see below), whose sum is σ = 89354748. Its totient is φ = 17019936.

The previous prime is 42549853. The next prime is 42549877. The reversal of 42549860 is 6894524.

It can be written as a sum of positive squares in 2 ways, for example, as 13734436 + 28815424 = 3706^2 + 5368^2 .

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, 1063727 + ... + 1063766.

It is an arithmetic number, because the mean of its divisors is an integer number (7446229).

Almost surely, 2^42549860 is an apocalyptic number.

It is an amenable number.

42549860 is an abundant number, since it is smaller than the sum of its proper divisors (46804888).

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

42549860 is a wasteful number, since it uses less digits than its factorization.

42549860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127502 (or 2127500 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 42549860 is about 6523.0253717121. The cubic root of 42549860 is about 349.1130193918.

The spelling of 42549860 in words is "forty-two million, five hundred forty-nine thousand, eight hundred sixty".