42620646 has 8 divisors (see below), whose sum is σ = 85241304. Its totient is φ = 14206880.

The previous prime is 42620621. The next prime is 42620651. The reversal of 42620646 is 64602624.

42620646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

42620646 is an admirable number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 3551715 + ... + 3551726.

It is an arithmetic number, because the mean of its divisors is an integer number (10655163).

Almost surely, 2^42620646 is an apocalyptic number.

42620646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42620646 is a wasteful number, since it uses less digits than its factorization.

42620646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7103446.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 42620646 is about 6528.4489735312. The cubic root of 42620646 is about 349.3065070870.

The spelling of 42620646 in words is "forty-two million, six hundred twenty thousand, six hundred forty-six".