42202845 has 12 divisors (see below), whose sum is σ = 73151676. Its totient is φ = 22508160.

The previous prime is 42202843. The next prime is 42202879. The reversal of 42202845 is 54820224.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4968441 + 37234404 = 2229^2 + 6102^2 .

It is not a de Polignac number, because 42202845 - 2¹ = 42202843 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42202843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 468876 + ... + 468965.

It is an arithmetic number, because the mean of its divisors is an integer number (6095973).

Almost surely, 2^42202845 is an apocalyptic number.

42202845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42202845 is a deficient number, since it is larger than the sum of its proper divisors (30948831).

42202845 is a wasteful number, since it uses less digits than its factorization.

42202845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937852 (or 937849 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 42202845 is about 6496.3716796378. The cubic root of 42202845 is about 348.1613649190.

The spelling of 42202845 in words is "forty-two million, two hundred two thousand, eight hundred forty-five".