42645204 has 60 divisors (see below), whose sum is σ = 127415904. Its totient is φ = 12183696.

The previous prime is 42645199. The next prime is 42645217. The reversal of 42645204 is 40254624.

42645204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42645204² = 3637226848403232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 19 ways as a sum of consecutive naturals, for example, 7134 + ... + 11669.

Almost surely, 2^42645204 is an apocalyptic number.

It is an amenable number.

42645204 is an abundant number, since it is smaller than the sum of its proper divisors (84770700).

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

42645204 is a wasteful number, since it uses less digits than its factorization.

42645204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18826 (or 18815 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 42645204 is about 6530.3295475803. The cubic root of 42645204 is about 349.3735842975.

Adding to 42645204 its reverse (40254624), we get a palindrome (82899828).

It can be divided in two parts, 42645 and 204, that added together give a square (42849 = 207²).

The spelling of 42645204 in words is "forty-two million, six hundred forty-five thousand, two hundred four".