84240123 has 16 divisors (see below), whose sum is σ = 122777856. Its totient is φ = 50951840.

The previous prime is 84240109. The next prime is 84240127. The reversal of 84240123 is 32104248.

It is a cyclic number.

It is not a de Polignac number, because 84240123 - 2⁶ = 84240059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84240093 and 84240102.

It is not an unprimeable number, because it can be changed into a prime (84240127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16090 + ... + 20672.

It is an arithmetic number, because the mean of its divisors is an integer number (7673616).

Almost surely, 2^84240123 is an apocalyptic number.

84240123 is a deficient number, since it is larger than the sum of its proper divisors (38537733).

84240123 is a wasteful number, since it uses less digits than its factorization.

84240123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5154.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 84240123 is about 9178.2418250992. The cubic root of 84240123 is about 438.3688277997.

The spelling of 84240123 in words is "eighty-four million, two hundred forty thousand, one hundred twenty-three".