42022818 has 24 divisors (see below), whose sum is σ = 91244556. Its totient is φ = 13977600.

The previous prime is 42022807. The next prime is 42022823. The reversal of 42022818 is 81822024.

42022818 is a `hidden beast` number, since 420 + 228 + 18 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41951529 + 71289 = 6477^2 + 267^2 .

It is a super-2 number, since 2×42022818² = 3531834465322248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42022791 and 42022800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7138 + ... + 11618.

Almost surely, 2^42022818 is an apocalyptic number.

42022818 is an abundant number, since it is smaller than the sum of its proper divisors (49221738).

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

42022818 is a wasteful number, since it uses less digits than its factorization.

42022818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010 (or 5007 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 42022818 is about 6482.5009062861. The cubic root of 42022818 is about 347.6656022796.

The spelling of 42022818 in words is "forty-two million, twenty-two thousand, eight hundred eighteen".