42831630 has 24 divisors (see below), whose sum is σ = 111362472. Its totient is φ = 11421744.

The previous prime is 42831587. The next prime is 42831631. The reversal of 42831630 is 3613824.

It is a happy number.

42831630 is a `hidden beast` number, since 4 + 28 + 3 + 1 + 630 = 666.

42831630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 42831594 and 42831603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42831631) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 237864 + ... + 238043.

It is an arithmetic number, because the mean of its divisors is an integer number (4640103).

Almost surely, 2^42831630 is an apocalyptic number.

42831630 is an abundant number, since it is smaller than the sum of its proper divisors (68530842).

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

42831630 is a wasteful number, since it uses less digits than its factorization.

42831630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475920 (or 475917 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 42831630 is about 6544.5878403456. The cubic root of 42831630 is about 349.8819465801.

The spelling of 42831630 in words is "forty-two million, eight hundred thirty-one thousand, six hundred thirty".