42402422 has 8 divisors (see below), whose sum is σ = 64221456. Its totient is φ = 20995272.

The previous prime is 42402421. The next prime is 42402427. The reversal of 42402422 is 22420424.

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

It is a junction number, because it is equal to n+sod(n) for n = 42402394 and 42402403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42402421) 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 3 ways as a sum of consecutive naturals, for example, 102713 + ... + 103124.

It is an arithmetic number, because the mean of its divisors is an integer number (8027682).

Almost surely, 2^42402422 is an apocalyptic number.

42402422 is a deficient number, since it is larger than the sum of its proper divisors (21819034).

42402422 is a wasteful number, since it uses less digits than its factorization.

42402422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205942.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 42402422 is about 6511.7142136307. The cubic root of 42402422 is about 348.7093197327.

Adding to 42402422 its reverse (22420424), we get a palindrome (64822846).

It can be divided in two parts, 42402 and 422, that added together give a palindrome (42824).

The spelling of 42402422 in words is "forty-two million, four hundred two thousand, four hundred twenty-two".