42006622 has 12 divisors (see below), whose sum is σ = 73297440. Its totient is φ = 18002796.

The previous prime is 42006619. The next prime is 42006631. The reversal of 42006622 is 22660024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42006593 and 42006602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214222 + ... + 214417.

It is an arithmetic number, because the mean of its divisors is an integer number (6108120).

Almost surely, 2^42006622 is an apocalyptic number.

42006622 is a deficient number, since it is larger than the sum of its proper divisors (31290818).

42006622 is a wasteful number, since it uses less digits than its factorization.

42006622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428655 (or 428648 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 42006622 is about 6481.2515766633. The cubic root of 42006622 is about 347.6209319798.

Adding to 42006622 its reverse (22660024), we get a palindrome (64666646).

The spelling of 42006622 in words is "forty-two million, six thousand, six hundred twenty-two".