84042650 has 24 divisors (see below), whose sum is σ = 157473180. Its totient is φ = 33368960.

The previous prime is 84042641. The next prime is 84042653. The reversal of 84042650 is 5624048.

It can be written as a sum of positive squares in 6 ways, for example, as 56595529 + 27447121 = 7523^2 + 5239^2 .

It is not an unprimeable number, because it can be changed into a prime (84042653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 716 + ... + 12984.

Almost surely, 2^84042650 is an apocalyptic number.

84042650 is a deficient number, since it is larger than the sum of its proper divisors (73430530).

84042650 is a wasteful number, since it uses less digits than its factorization.

84042650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12418 (or 12413 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 84042650 is about 9167.4778428966. The cubic root of 84042650 is about 438.0260230711.

Adding to 84042650 its reverse (5624048), we get a palindrome (89666698).

The spelling of 84042650 in words is "eighty-four million, forty-two thousand, six hundred fifty".