100420143 has 4 divisors (see below), whose sum is σ = 133893528. Its totient is φ = 66946760.

The previous prime is 100420141. The next prime is 100420147. The reversal of 100420143 is 341024001.

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

It is a cyclic number.

It is not a de Polignac number, because 100420143 - 2¹ = 100420141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100420141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16736688 + ... + 16736693.

It is an arithmetic number, because the mean of its divisors is an integer number (33473382).

Almost surely, 2^100420143 is an apocalyptic number.

100420143 is a deficient number, since it is larger than the sum of its proper divisors (33473385).

100420143 is an equidigital number, since it uses as much as digits as its factorization.

100420143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33473384.

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

The square root of 100420143 is about 10020.9851312134. The cubic root of 100420143 is about 464.8080187950.

Adding to 100420143 its reverse (341024001), we get a palindrome (441444144).

The spelling of 100420143 in words is "one hundred million, four hundred twenty thousand, one hundred forty-three".