84216123 has 12 divisors (see below), whose sum is σ = 122851248. Its totient is φ = 55587600.

The previous prime is 84216109. The next prime is 84216127. The reversal of 84216123 is 32161248.

84216123 is a `hidden beast` number, since 8 + 42 + 1 + 612 + 3 = 666.

It is not a de Polignac number, because 84216123 - 2²⁴ = 67438907 is a prime.

It is a super-2 number, since 2×84216123² = 14184710746302258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84216127) 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, 45415 + ... + 47232.

It is an arithmetic number, because the mean of its divisors is an integer number (10237604).

Almost surely, 2^84216123 is an apocalyptic number.

84216123 is a deficient number, since it is larger than the sum of its proper divisors (38635125).

84216123 is a wasteful number, since it uses less digits than its factorization.

84216123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92754 (or 92751 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 84216123 is about 9176.9342920171. The cubic root of 84216123 is about 438.3271934384.

The spelling of 84216123 in words is "eighty-four million, two hundred sixteen thousand, one hundred twenty-three".