84240045 has 12 divisors (see below), whose sum is σ = 146016156. Its totient is φ = 44928000.

The previous prime is 84240011. The next prime is 84240059. The reversal of 84240045 is 54004248.

It can be written as a sum of positive squares in 2 ways, for example, as 47734281 + 36505764 = 6909^2 + 6042^2 .

It is a de Polignac number, because none of the positive numbers 2^k-84240045 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 935956 + ... + 936045.

It is an arithmetic number, because the mean of its divisors is an integer number (12168013).

Almost surely, 2^84240045 is an apocalyptic number.

It is an amenable number.

84240045 is a deficient number, since it is larger than the sum of its proper divisors (61776111).

84240045 is a wasteful number, since it uses less digits than its factorization.

84240045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872012 (or 1872009 counting only the distinct ones).

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

The square root of 84240045 is about 9178.2375759184. The cubic root of 84240045 is about 438.3686925008.

The spelling of 84240045 in words is "eighty-four million, two hundred forty thousand, forty-five".