84021258 has 16 divisors (see below), whose sum is σ = 170410176. Its totient is φ = 27612480.

The previous prime is 84021257. The next prime is 84021281. The reversal of 84021258 is 85212048.

It is not an unprimeable number, because it can be changed into a prime (84021257) 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, 98191 + ... + 99042.

It is an arithmetic number, because the mean of its divisors is an integer number (10650636).

Almost surely, 2^84021258 is an apocalyptic number.

84021258 is an abundant number, since it is smaller than the sum of its proper divisors (86388918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84021258 is a wasteful number, since it uses less digits than its factorization.

84021258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197309.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 84021258 is about 9166.3110355257. The cubic root of 84021258 is about 437.9888552449.

The spelling of 84021258 in words is "eighty-four million, twenty-one thousand, two hundred fifty-eight".