84212442 has 48 divisors (see below), whose sum is σ = 190525608. Its totient is φ = 26856960.

The previous prime is 84212431. The next prime is 84212449. The reversal of 84212442 is 24421248.

84212442 is a `hidden beast` number, since 8 + 4 + 212 + 442 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 39576681 + 44635761 = 6291^2 + 6681^2 .

It is not an unprimeable number, because it can be changed into a prime (84212449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38038 + ... + 40190.

Almost surely, 2^84212442 is an apocalyptic number.

84212442 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

84212442 is an abundant number, since it is smaller than the sum of its proper divisors (106313166).

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

84212442 is a wasteful number, since it uses less digits than its factorization.

84212442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255 (or 2252 counting only the distinct ones).

The product of its digits is 4096, while the sum is 27.

The square root of 84212442 is about 9176.7337326524. The cubic root of 84212442 is about 438.3208070686.

The spelling of 84212442 in words is "eighty-four million, two hundred twelve thousand, four hundred forty-two".