105421142 has 8 divisors (see below), whose sum is σ = 163232832. Its totient is φ = 51010200.

The previous prime is 105421109. The next prime is 105421157. The reversal of 105421142 is 241124501.

It is a happy number.

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

It is a super-2 number, since 2×105421142² = 22227234361168328, 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, 850109 + ... + 850232.

It is an arithmetic number, because the mean of its divisors is an integer number (20404104).

Almost surely, 2^105421142 is an apocalyptic number.

105421142 is a deficient number, since it is larger than the sum of its proper divisors (57811690).

105421142 is a wasteful number, since it uses less digits than its factorization.

105421142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700374.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 105421142 is about 10267.4798271046. The cubic root of 105421142 is about 472.3992928527.

Adding to 105421142 its reverse (241124501), we get a palindrome (346545643).

The spelling of 105421142 in words is "one hundred five million, four hundred twenty-one thousand, one hundred forty-two".