84240523 has 4 divisors (see below), whose sum is σ = 85109080. Its totient is φ = 83371968.

The previous prime is 84240487. The next prime is 84240551. The reversal of 84240523 is 32504248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84240523 - 2⁹ = 84240011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84240491 and 84240500.

It is not an unprimeable number, because it can be changed into a prime (84240553) 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 3 ways as a sum of consecutive naturals, for example, 434133 + ... + 434326.

It is an arithmetic number, because the mean of its divisors is an integer number (21277270).

Almost surely, 2^84240523 is an apocalyptic number.

84240523 is a deficient number, since it is larger than the sum of its proper divisors (868557).

84240523 is an equidigital number, since it uses as much as digits as its factorization.

84240523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868556.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 84240523 is about 9178.2636157391. The cubic root of 84240523 is about 438.3695216387.

The spelling of 84240523 in words is "eighty-four million, two hundred forty thousand, five hundred twenty-three".