100240143 has 64 divisors (see below), whose sum is σ = 159252480. Its totient is φ = 55641600.

The previous prime is 100240139. The next prime is 100240159. The reversal of 100240143 is 341042001.

It is a Cunningham number, because it is equal to 10012²-1.

It is not a de Polignac number, because 100240143 - 2² = 100240139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100240163) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1411798 + ... + 1411868.

It is an arithmetic number, because the mean of its divisors is an integer number (2488320).

Almost surely, 2^100240143 is an apocalyptic number.

100240143 is a deficient number, since it is larger than the sum of its proper divisors (59012337).

100240143 is a wasteful number, since it uses less digits than its factorization.

100240143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 100240143 is about 10011.9999500599. Note that the first 4 decimals coincide. The cubic root of 100240143 is about 464.5301346974.

Adding to 100240143 its reverse (341042001), we get a palindrome (441282144).

The spelling of 100240143 in words is "one hundred million, two hundred forty thousand, one hundred forty-three".