42646220 has 12 divisors (see below), whose sum is σ = 89557104. Its totient is φ = 17058480.

The previous prime is 42646199. The next prime is 42646229. The reversal of 42646220 is 2264624.

42646220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42646220.

It is not an unprimeable number, because it can be changed into a prime (42646229) 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 3 ways as a sum of consecutive naturals, for example, 1066136 + ... + 1066175.

It is an arithmetic number, because the mean of its divisors is an integer number (7463092).

Almost surely, 2^42646220 is an apocalyptic number.

It is an amenable number.

42646220 is an abundant number, since it is smaller than the sum of its proper divisors (46910884).

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

42646220 is a wasteful number, since it uses less digits than its factorization.

42646220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132320 (or 2132318 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 42646220 is about 6530.4073379844. The cubic root of 42646220 is about 349.3763588240.

The spelling of 42646220 in words is "forty-two million, six hundred forty-six thousand, two hundred twenty".