423221142 has 8 divisors (see below), whose sum is σ = 846442296. Its totient is φ = 141073712.

The previous prime is 423221107. The next prime is 423221153. The reversal of 423221142 is 241122324.

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

423221142 is an admirable number.

It is a super-2 number, since 2×423221142² = 358232270071568328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35268423 + ... + 35268434.

It is an arithmetic number, because the mean of its divisors is an integer number (105805287).

Almost surely, 2^423221142 is an apocalyptic number.

423221142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423221142 is a wasteful number, since it uses less digits than its factorization.

423221142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70536862.

The product of its digits is 768, while the sum is 21.

The square root of 423221142 is about 20572.3392447237. The cubic root of 423221142 is about 750.7968668156.

Adding to 423221142 its reverse (241122324), we get a palindrome (664343466).

The spelling of 423221142 in words is "four hundred twenty-three million, two hundred twenty-one thousand, one hundred forty-two".