42222398 has 4 divisors (see below), whose sum is σ = 63333600. Its totient is φ = 21111198.

The previous prime is 42222391. The next prime is 42222409. The reversal of 42222398 is 89322224.

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 (42222391) 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 as a sum of consecutive naturals, namely, 10555598 + ... + 10555601.

It is an arithmetic number, because the mean of its divisors is an integer number (15833400).

Almost surely, 2^42222398 is an apocalyptic number.

42222398 is a deficient number, since it is larger than the sum of its proper divisors (21111202).

42222398 is a wasteful number, since it uses less digits than its factorization.

42222398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21111201.

The product of its digits is 13824, while the sum is 32.

The square root of 42222398 is about 6497.8764223398. The cubic root of 42222398 is about 348.2151254976.

The spelling of 42222398 in words is "forty-two million, two hundred twenty-two thousand, three hundred ninety-eight".