84107242 has 16 divisors (see below), whose sum is σ = 128226312. Its totient is φ = 41368320.

The previous prime is 84107203. The next prime is 84107249. The reversal of 84107242 is 24270148.

It is a Cunningham number, because it is equal to 9171²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 51969681 + 32137561 = 7209^2 + 5669^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 84107242.

It is not an unprimeable number, because it can be changed into a prime (84107249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110142 + ... + 110902.

Almost surely, 2^84107242 is an apocalyptic number.

84107242 is a deficient number, since it is larger than the sum of its proper divisors (44119070).

84107242 is a wasteful number, since it uses less digits than its factorization.

84107242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 84107242 is about 9171.0000545197. Note that the first 4 decimals coincide. The cubic root of 84107242 is about 438.1382110759.

The spelling of 84107242 in words is "eighty-four million, one hundred seven thousand, two hundred forty-two".