42400222 has 8 divisors (see below), whose sum is σ = 63765000. Its totient is φ = 21145224.

The previous prime is 42400207. The next prime is 42400243. The reversal of 42400222 is 22200424.

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 = 42400196 and 42400205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26472 + ... + 28027.

It is an arithmetic number, because the mean of its divisors is an integer number (7970625).

Almost surely, 2^42400222 is an apocalyptic number.

42400222 is a deficient number, since it is larger than the sum of its proper divisors (21364778).

42400222 is a wasteful number, since it uses less digits than its factorization.

42400222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54890.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 42400222 is about 6511.5452851071. The cubic root of 42400222 is about 348.7032888368.

Adding to 42400222 its reverse (22200424), we get a palindrome (64600646).

The spelling of 42400222 in words is "forty-two million, four hundred thousand, two hundred twenty-two".