84684242 has 8 divisors (see below), whose sum is σ = 134498556. Its totient is φ = 39851392.

The previous prime is 84684241. The next prime is 84684253. The reversal of 84684242 is 24248648.

It can be written as a sum of positive squares in 2 ways, for example, as 68046001 + 16638241 = 8249^2 + 4079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×84684242² = 14342841686229128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84684196 and 84684205.

It is not an unprimeable number, because it can be changed into a prime (84684241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1245323 + ... + 1245390.

Almost surely, 2^84684242 is an apocalyptic number.

84684242 is a deficient number, since it is larger than the sum of its proper divisors (49814314).

84684242 is a wasteful number, since it uses less digits than its factorization.

84684242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490732.

The product of its digits is 98304, while the sum is 38.

The square root of 84684242 is about 9202.4041423967. The cubic root of 84684242 is about 439.1378468910.

The spelling of 84684242 in words is "eighty-four million, six hundred eighty-four thousand, two hundred forty-two".