100042242 has 16 divisors (see below), whose sum is σ = 200603520. Its totient is φ = 33260912.

The previous prime is 100042237. The next prime is 100042253. The reversal of 100042242 is 242240001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19098 + ... + 23765.

It is an arithmetic number, because the mean of its divisors is an integer number (12537720).

Almost surely, 2^100042242 is an apocalyptic number.

100042242 is an abundant number, since it is smaller than the sum of its proper divisors (100561278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100042242 is a wasteful number, since it uses less digits than its factorization.

100042242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43257.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 100042242 is about 10002.1118769988. Note that the first 3 decimals coincide. The cubic root of 100042242 is about 464.2242308260.

Adding to 100042242 its reverse (242240001), we get a palindrome (342282243).

It can be divided in two parts, 10004 and 2242, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 100042242 in words is "one hundred million, forty-two thousand, two hundred forty-two".