421144142 has 8 divisors (see below), whose sum is σ = 634989936. Its totient is φ = 209480832.

The previous prime is 421144123. The next prime is 421144147. The reversal of 421144142 is 241441124.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421144147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545138 + ... + 545909.

It is an arithmetic number, because the mean of its divisors is an integer number (79373742).

Almost surely, 2^421144142 is an apocalyptic number.

421144142 is a deficient number, since it is larger than the sum of its proper divisors (213845794).

421144142 is a wasteful number, since it uses less digits than its factorization.

421144142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091242.

The product of its digits is 1024, while the sum is 23.

The square root of 421144142 is about 20521.7967536958. The cubic root of 421144142 is about 749.5666486200.

Adding to 421144142 its reverse (241441124), we get a palindrome (662585266).

The spelling of 421144142 in words is "four hundred twenty-one million, one hundred forty-four thousand, one hundred forty-two".