421223142 has 8 divisors (see below), whose sum is σ = 842446296. Its totient is φ = 140407712.

The previous prime is 421223137. The next prime is 421223183. The reversal of 421223142 is 241322124.

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

421223142 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35101923 + ... + 35101934.

It is an arithmetic number, because the mean of its divisors is an integer number (105305787).

Almost surely, 2^421223142 is an apocalyptic number.

421223142 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.

421223142 is a wasteful number, since it uses less digits than its factorization.

421223142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70203862.

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

The square root of 421223142 is about 20523.7214461705. The cubic root of 421223142 is about 749.6135146508.

Adding to 421223142 its reverse (241322124), we get a palindrome (662545266).

The spelling of 421223142 in words is "four hundred twenty-one million, two hundred twenty-three thousand, one hundred forty-two".