100001420 has 24 divisors (see below), whose sum is σ = 210210000. Its totient is φ = 39961152.

The previous prime is 100001399. The next prime is 100001431. The reversal of 100001420 is 24100001.

It is a junction number, because it is equal to n+sod(n) for n = 100001398 and 100001407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26831 + ... + 30329.

It is an arithmetic number, because the mean of its divisors is an integer number (8758750).

Almost surely, 2^100001420 is an apocalyptic number.

100001420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001420 is an abundant number, since it is smaller than the sum of its proper divisors (110208580).

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

100001420 is a wasteful number, since it uses less digits than its factorization.

100001420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4937 (or 4935 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 100001420 is about 10000.0709997480. The cubic root of 100001420 is about 464.1610803696.

Adding to 100001420 its reverse (24100001), we get a palindrome (124101421).

The spelling of 100001420 in words is "one hundred million, one thousand, four hundred twenty".