100236442 has 4 divisors (see below), whose sum is σ = 150354666. Its totient is φ = 50118220.

The previous prime is 100236439. The next prime is 100236449. The reversal of 100236442 is 244632001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 63984001 + 36252441 = 7999^2 + 6021^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (100236449) 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 as a sum of consecutive naturals, namely, 25059109 + ... + 25059112.

Almost surely, 2^100236442 is an apocalyptic number.

100236442 is a deficient number, since it is larger than the sum of its proper divisors (50118224).

100236442 is an equidigital number, since it uses as much as digits as its factorization.

100236442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50118223.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 100236442 is about 10011.8151201468. The cubic root of 100236442 is about 464.5244176026.

Adding to 100236442 its reverse (244632001), we get a palindrome (344868443).

The spelling of 100236442 in words is "one hundred million, two hundred thirty-six thousand, four hundred forty-two".