84242490 has 16 divisors (see below), whose sum is σ = 202182048. Its totient is φ = 22464656.

The previous prime is 84242489. The next prime is 84242507. The reversal of 84242490 is 9424248.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1404012 + ... + 1404071.

It is an arithmetic number, because the mean of its divisors is an integer number (12636378).

Almost surely, 2^84242490 is an apocalyptic number.

84242490 is an abundant number, since it is smaller than the sum of its proper divisors (117939558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84242490 is a wasteful number, since it uses less digits than its factorization.

84242490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808093.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 84242490 is about 9178.3707704581. The cubic root of 84242490 is about 438.3729335602.

The spelling of 84242490 in words is "eighty-four million, two hundred forty-two thousand, four hundred ninety".