421443142 has 8 divisors (see below), whose sum is σ = 665436600. Its totient is φ = 199630944.

The previous prime is 421443137. The next prime is 421443151. The reversal of 421443142 is 241344124.

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

It is a super-2 number, since 2×421443142² = 355228643877664328, which contains 22 as substring.

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, 5545267 + ... + 5545342.

It is an arithmetic number, because the mean of its divisors is an integer number (83179575).

Almost surely, 2^421443142 is an apocalyptic number.

421443142 is a deficient number, since it is larger than the sum of its proper divisors (243993458).

421443142 is a wasteful number, since it uses less digits than its factorization.

421443142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11090630.

The product of its digits is 3072, while the sum is 25.

The square root of 421443142 is about 20529.0803983033. The cubic root of 421443142 is about 749.7439967746.

Adding to 421443142 its reverse (241344124), we get a palindrome (662787266).

The spelling of 421443142 in words is "four hundred twenty-one million, four hundred forty-three thousand, one hundred forty-two".