42645202 has 4 divisors (see below), whose sum is σ = 63967806. Its totient is φ = 21322600.

The previous prime is 42645199. The next prime is 42645217. The reversal of 42645202 is 20254624.

42645202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 30680521 + 11964681 = 5539^2 + 3459^2 .

It is a super-2 number, since 2×42645202² = 3637226507241608, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 10661299 + ... + 10661302.

Almost surely, 2^42645202 is an apocalyptic number.

42645202 is a deficient number, since it is larger than the sum of its proper divisors (21322604).

42645202 is a wasteful number, since it uses less digits than its factorization.

42645202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21322603.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 42645202 is about 6530.3293944486. The cubic root of 42645202 is about 349.3735788358.

Adding to 42645202 its reverse (20254624), we get a palindrome (62899826).

The spelling of 42645202 in words is "forty-two million, six hundred forty-five thousand, two hundred two".