42646620 has 24 divisors (see below), whose sum is σ = 119410704. Its totient is φ = 11372416.

The previous prime is 42646619. The next prime is 42646633. The reversal of 42646620 is 2664624.

42646620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 7 ways as a sum of consecutive naturals, for example, 355329 + ... + 355448.

It is an arithmetic number, because the mean of its divisors is an integer number (4975446).

Almost surely, 2^42646620 is an apocalyptic number.

It is an amenable number.

42646620 is an abundant number, since it is smaller than the sum of its proper divisors (76764084).

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

42646620 is a wasteful number, since it uses less digits than its factorization.

42646620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710789 (or 710787 counting only the distinct ones).

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

The square root of 42646620 is about 6530.4379638735. The cubic root of 42646620 is about 349.3774511452.

The spelling of 42646620 in words is "forty-two million, six hundred forty-six thousand, six hundred twenty".