84121030 has 16 divisors (see below), whose sum is σ = 173049120. Its totient is φ = 28841472.

The previous prime is 84121007. The next prime is 84121033. The reversal of 84121030 is 3012148.

It is a junction number, because it is equal to n+sod(n) for n = 84120989 and 84121007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84121033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600795 + ... + 600934.

It is an arithmetic number, because the mean of its divisors is an integer number (10815570).

Almost surely, 2^84121030 is an apocalyptic number.

84121030 is an abundant number, since it is smaller than the sum of its proper divisors (88928090).

84121030 is a wasteful number, since it uses less digits than its factorization.

84121030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201743.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 84121030 is about 9171.7517410798. The cubic root of 84121030 is about 438.1621516207.

Adding to 84121030 its reverse (3012148), we get a palindrome (87133178).

The spelling of 84121030 in words is "eighty-four million, one hundred twenty-one thousand, thirty".