42620438 has 16 divisors (see below), whose sum is σ = 73641984. Its totient is φ = 18121320.

The previous prime is 42620423. The next prime is 42620447. The reversal of 42620438 is 83402624.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42620438.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 10208 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (4602624).

Almost surely, 2^42620438 is an apocalyptic number.

42620438 is a deficient number, since it is larger than the sum of its proper divisors (31021546).

42620438 is a wasteful number, since it uses less digits than its factorization.

42620438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24107.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 42620438 is about 6528.4330432348. The cubic root of 42620438 is about 349.3059388501.

The spelling of 42620438 in words is "forty-two million, six hundred twenty thousand, four hundred thirty-eight".