42406022 has 4 divisors (see below), whose sum is σ = 63609036. Its totient is φ = 21203010.

The previous prime is 42406019. The next prime is 42406031. The reversal of 42406022 is 22060424.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 42405985 and 42406003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601504 + ... + 10601507.

It is an arithmetic number, because the mean of its divisors is an integer number (15902259).

Almost surely, 2^42406022 is an apocalyptic number.

42406022 is a deficient number, since it is larger than the sum of its proper divisors (21203014).

42406022 is a wasteful number, since it uses less digits than its factorization.

42406022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21203013.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 42406022 is about 6511.9906326714. The cubic root of 42406022 is about 348.7191880214.

Adding to 42406022 its reverse (22060424), we get a palindrome (64466446).

The spelling of 42406022 in words is "forty-two million, four hundred six thousand, twenty-two".