421102142 has 8 divisors (see below), whose sum is σ = 632372832. Its totient is φ = 210311200.

The previous prime is 421102141. The next prime is 421102151. The reversal of 421102142 is 241201124.

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

It is a self number, because there is not a number n which added to its sum of digits gives 421102142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421102141) 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, 117734 + ... + 121257.

It is an arithmetic number, because the mean of its divisors is an integer number (79046604).

Almost surely, 2^421102142 is an apocalyptic number.

421102142 is a deficient number, since it is larger than the sum of its proper divisors (211270690).

421102142 is a wasteful number, since it uses less digits than its factorization.

421102142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239874.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 421102142 is about 20520.7734259701. The cubic root of 421102142 is about 749.5417301161.

Adding to 421102142 its reverse (241201124), we get a palindrome (662303266).

The spelling of 421102142 in words is "four hundred twenty-one million, one hundred two thousand, one hundred forty-two".