100001420240 has 20 divisors (see below), whose sum is σ = 232503302244. Its totient is φ = 40000568064.

The previous prime is 100001420213. The next prime is 100001420243. The reversal of 100001420240 is 42024100001.

It can be written as a sum of positive squares in 2 ways, for example, as 18904050064 + 81097370176 = 137492^2 + 284776^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001420243) 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, 625008797 + ... + 625008956.

Almost surely, 2^100001420240 is an apocalyptic number.

100001420240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001420240 is an abundant number, since it is smaller than the sum of its proper divisors (132501882004).

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

100001420240 is a wasteful number, since it uses less digits than its factorization.

100001420240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250017766 (or 1250017760 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 100001420240 its reverse (42024100001), we get a palindrome (142025520241).

The spelling of 100001420240 in words is "one hundred billion, one million, four hundred twenty thousand, two hundred forty".