84229042 has 4 divisors (see below), whose sum is σ = 126343566. Its totient is φ = 42114520.

The previous prime is 84229027. The next prime is 84229073. The reversal of 84229042 is 24092248.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 84107241 + 121801 = 9171^2 + 349^2 .

It is a junction number, because it is equal to n+sod(n) for n = 84228995 and 84229013.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 21057259 + ... + 21057262.

Almost surely, 2^84229042 is an apocalyptic number.

84229042 is a deficient number, since it is larger than the sum of its proper divisors (42114524).

84229042 is a wasteful number, since it uses less digits than its factorization.

84229042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42114523.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 84229042 is about 9177.6381493280. The cubic root of 84229042 is about 438.3496058509.

The spelling of 84229042 in words is "eighty-four million, two hundred twenty-nine thousand, forty-two".