42485730 has 64 divisors (see below), whose sum is σ = 117089280. Its totient is φ = 9664704.

The previous prime is 42485719. The next prime is 42485743. The reversal of 42485730 is 3758424.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42485691 and 42485700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64141 + ... + 64799.

It is an arithmetic number, because the mean of its divisors is an integer number (1829520).

Almost surely, 2^42485730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42485730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58544640).

42485730 is an abundant number, since it is smaller than the sum of its proper divisors (74603550).

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

42485730 is a wasteful number, since it uses less digits than its factorization.

42485730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 42485730 is about 6518.1078542780. The cubic root of 42485730 is about 348.9375399644.

The spelling of 42485730 in words is "forty-two million, four hundred eighty-five thousand, seven hundred thirty".