42405830 has 64 divisors (see below), whose sum is σ = 83980800. Its totient is φ = 15375360.

The previous prime is 42405827. The next prime is 42405877. The reversal of 42405830 is 3850424.

42405830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

42405830 is a modest number, since divided by 5830 gives 4240 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 42405830.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 476426 + ... + 476514.

It is an arithmetic number, because the mean of its divisors is an integer number (1312200).

Almost surely, 2^42405830 is an apocalyptic number.

42405830 is a deficient number, since it is larger than the sum of its proper divisors (41574970).

42405830 is a wasteful number, since it uses less digits than its factorization.

42405830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 42405830 is about 6511.9758906188. The cubic root of 42405830 is about 348.7186617267.

The spelling of 42405830 in words is "forty-two million, four hundred five thousand, eight hundred thirty".