84387242 has 16 divisors (see below), whose sum is σ = 129900672. Its totient is φ = 41092800.

The previous prime is 84387211. The next prime is 84387257. The reversal of 84387242 is 24278348.

It is a happy number.

It is a super-2 number, since 2×84387242² = 14242413224733128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84387196 and 84387205.

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 in 7 ways as a sum of consecutive naturals, for example, 33263 + ... + 35709.

It is an arithmetic number, because the mean of its divisors is an integer number (8118792).

Almost surely, 2^84387242 is an apocalyptic number.

84387242 is a deficient number, since it is larger than the sum of its proper divisors (45513430).

84387242 is a wasteful number, since it uses less digits than its factorization.

84387242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893.

The product of its digits is 86016, while the sum is 38.

The square root of 84387242 is about 9186.2528813439. The cubic root of 84387242 is about 438.6238720469.

The spelling of 84387242 in words is "eighty-four million, three hundred eighty-seven thousand, two hundred forty-two".