100142444 has 24 divisors (see below), whose sum is σ = 187654320. Its totient is φ = 46593536.

The previous prime is 100142443. The next prime is 100142467. The reversal of 100142444 is 444241001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (100142443) 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, 2222 + ... + 14325.

It is an arithmetic number, because the mean of its divisors is an integer number (7818930).

Almost surely, 2^100142444 is an apocalyptic number.

It is an amenable number.

100142444 is a deficient number, since it is larger than the sum of its proper divisors (87511876).

100142444 is a wasteful number, since it uses less digits than its factorization.

100142444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16657 (or 16655 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 100142444 is about 10007.1196655181. The cubic root of 100142444 is about 464.3791676271.

Adding to 100142444 its reverse (444241001), we get a palindrome (544383445).

The spelling of 100142444 in words is "one hundred million, one hundred forty-two thousand, four hundred forty-four".