100145442 has 16 divisors (see below), whose sum is σ = 200388960. Its totient is φ = 33365472.

The previous prime is 100145417. The next prime is 100145449. The reversal of 100145442 is 244541001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (100145449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22038 + ... + 26190.

It is an arithmetic number, because the mean of its divisors is an integer number (12524310).

Almost surely, 2^100145442 is an apocalyptic number.

100145442 is an abundant number, since it is smaller than the sum of its proper divisors (100243518).

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

100145442 is a wasteful number, since it uses less digits than its factorization.

100145442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8177.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 100145442 is about 10007.2694577492. The cubic root of 100145442 is about 464.3838016756.

Adding to 100145442 its reverse (244541001), we get a palindrome (344686443).

The spelling of 100145442 in words is "one hundred million, one hundred forty-five thousand, four hundred forty-two".