42212822 has 4 divisors (see below), whose sum is σ = 63319236. Its totient is φ = 21106410.

The previous prime is 42212801. The next prime is 42212827. The reversal of 42212822 is 22821224.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42212827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10553204 + ... + 10553207.

It is an arithmetic number, because the mean of its divisors is an integer number (15829809).

Almost surely, 2^42212822 is an apocalyptic number.

42212822 is a deficient number, since it is larger than the sum of its proper divisors (21106414).

42212822 is a wasteful number, since it uses less digits than its factorization.

42212822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21106413.

The product of its digits is 1024, while the sum is 23.

The square root of 42212822 is about 6497.1395244369. The cubic root of 42212822 is about 348.1887985533.

It can be divided in two parts, 42212 and 822, that added together give a palindrome (43034).

The spelling of 42212822 in words is "forty-two million, two hundred twelve thousand, eight hundred twenty-two".