100212142 has 8 divisors (see below), whose sum is σ = 152782632. Its totient is φ = 49284600.

The previous prime is 100212121. The next prime is 100212143. The reversal of 100212142 is 241212001.

It is a happy number.

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

It is a super-3 number, since 3×100212142³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410584 + ... + 410827.

It is an arithmetic number, because the mean of its divisors is an integer number (19097829).

Almost surely, 2^100212142 is an apocalyptic number.

100212142 is a deficient number, since it is larger than the sum of its proper divisors (52570490).

100212142 is an equidigital number, since it uses as much as digits as its factorization.

100212142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821474.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 100212142 is about 10010.6014804306. The cubic root of 100212142 is about 464.4868768460.

Adding to 100212142 its reverse (241212001), we get a palindrome (341424143).

The spelling of 100212142 in words is "one hundred million, two hundred twelve thousand, one hundred forty-two".