42402222 has 24 divisors (see below), whose sum is σ = 94355976. Its totient is φ = 13751856.

The previous prime is 42402209. The next prime is 42402229. The reversal of 42402222 is 22220424.

42402222 is a `hidden beast` number, since 42 + 402 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 42402195 and 42402204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42402229) by changing a digit.

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, 31168 + ... + 32499.

It is an arithmetic number, because the mean of its divisors is an integer number (3931499).

Almost surely, 2^42402222 is an apocalyptic number.

42402222 is an abundant number, since it is smaller than the sum of its proper divisors (51953754).

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

42402222 is a wasteful number, since it uses less digits than its factorization.

42402222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63712 (or 63709 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 42402222 is about 6511.6988566733. The cubic root of 42402222 is about 348.7087714780.

Adding to 42402222 its reverse (22220424), we get a palindrome (64622646).

It can be divided in two parts, 42402 and 222, that added together give a palindrome (42624).

The spelling of 42402222 in words is "forty-two million, four hundred two thousand, two hundred twenty-two".