84270123 has 12 divisors (see below), whose sum is σ = 139112688. Its totient is φ = 48154320.

The previous prime is 84270119. The next prime is 84270133. The reversal of 84270123 is 32107248.

It is not a de Polignac number, because 84270123 - 2² = 84270119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84270103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 668748 + ... + 668873.

It is an arithmetic number, because the mean of its divisors is an integer number (11592724).

Almost surely, 2^84270123 is an apocalyptic number.

84270123 is a deficient number, since it is larger than the sum of its proper divisors (54842565).

84270123 is a wasteful number, since it uses less digits than its factorization.

84270123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337634 (or 1337631 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 84270123 is about 9179.8759795544. The cubic root of 84270123 is about 438.4208596326.

It can be divided in two parts, 842701 and 23, that added together give a square (842724 = 918²).

The spelling of 84270123 in words is "eighty-four million, two hundred seventy thousand, one hundred twenty-three".