100142212 has 6 divisors (see below), whose sum is σ = 175248878. Its totient is φ = 50071104.

The previous prime is 100142197. The next prime is 100142219. The reversal of 100142212 is 212241001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 93045316 + 7096896 = 9646^2 + 2664^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100142192 and 100142201.

It is not an unprimeable number, because it can be changed into a prime (100142219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12517773 + ... + 12517780.

Almost surely, 2^100142212 is an apocalyptic number.

It is an amenable number.

100142212 is a deficient number, since it is larger than the sum of its proper divisors (75106666).

100142212 is a wasteful number, since it uses less digits than its factorization.

100142212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25035557 (or 25035555 counting only the distinct ones).

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

The square root of 100142212 is about 10007.1080737644. The cubic root of 100142212 is about 464.3788090177.

Adding to 100142212 its reverse (212241001), we get a palindrome (312383213).

The spelling of 100142212 in words is "one hundred million, one hundred forty-two thousand, two hundred twelve".