100445244142 has 4 divisors (see below), whose sum is σ = 150667866216. Its totient is φ = 50222622070.

The previous prime is 100445244139. The next prime is 100445244149. The reversal of 100445244142 is 241442544001.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100445244149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25111311034 + ... + 25111311037.

It is an arithmetic number, because the mean of its divisors is an integer number (37666966554).

Almost surely, 2^100445244142 is an apocalyptic number.

100445244142 is a deficient number, since it is larger than the sum of its proper divisors (50222622074).

100445244142 is an equidigital number, since it uses as much as digits as its factorization.

100445244142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50222622073.

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 100445244142 its reverse (241442544001), we get a palindrome (341887788143).

The spelling of 100445244142 in words is "one hundred billion, four hundred forty-five million, two hundred forty-four thousand, one hundred forty-two".