84118123 has 4 divisors (see below), whose sum is σ = 84138808. Its totient is φ = 84097440.

The previous prime is 84118117. The next prime is 84118189. The reversal of 84118123 is 32181148.

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 84118123 - 2¹⁷ = 83987051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84118091 and 84118100.

It is not an unprimeable number, because it can be changed into a prime (84110123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1998 + ... + 13123.

It is an arithmetic number, because the mean of its divisors is an integer number (21034702).

Almost surely, 2^84118123 is an apocalyptic number.

84118123 is a deficient number, since it is larger than the sum of its proper divisors (20685).

84118123 is a wasteful number, since it uses less digits than its factorization.

84118123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20684.

The product of its digits is 1536, while the sum is 28.

The square root of 84118123 is about 9171.5932639864. The cubic root of 84118123 is about 438.1571043214.

The spelling of 84118123 in words is "eighty-four million, one hundred eighteen thousand, one hundred twenty-three".