84121067 has 4 divisors (see below), whose sum is σ = 84139416. Its totient is φ = 84102720.

The previous prime is 84121061. The next prime is 84121087. The reversal of 84121067 is 76012148.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84121067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84121061) 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, 4283 + ... + 13659.

It is an arithmetic number, because the mean of its divisors is an integer number (21034854).

Almost surely, 2^84121067 is an apocalyptic number.

84121067 is a deficient number, since it is larger than the sum of its proper divisors (18349).

84121067 is an equidigital number, since it uses as much as digits as its factorization.

84121067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18348.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 84121067 is about 9171.7537581424. The cubic root of 84121067 is about 438.1622158614.

The spelling of 84121067 in words is "eighty-four million, one hundred twenty-one thousand, sixty-seven".