42224947 has 8 divisors (see below), whose sum is σ = 43010240. Its totient is φ = 41446080.

The previous prime is 42224933. The next prime is 42224989. The reversal of 42224947 is 74942224.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42224947 - 2²³ = 33836339 is a prime.

It is a super-2 number, since 2×42224947² = 3565892298305618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42224927) 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 in 7 ways as a sum of consecutive naturals, for example, 12823 + ... + 15775.

It is an arithmetic number, because the mean of its divisors is an integer number (5376280).

Almost surely, 2^42224947 is an apocalyptic number.

42224947 is a deficient number, since it is larger than the sum of its proper divisors (785293).

42224947 is a wasteful number, since it uses less digits than its factorization.

42224947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213.

The product of its digits is 32256, while the sum is 34.

The square root of 42224947 is about 6498.0725603828. The cubic root of 42224947 is about 348.2221326987. Note that the first 3 decimals are identical.

The spelling of 42224947 in words is "forty-two million, two hundred twenty-four thousand, nine hundred forty-seven".