101200420 has 12 divisors (see below), whose sum is σ = 212520924. Its totient is φ = 40480160.

The previous prime is 101200417. The next prime is 101200469. The reversal of 101200420 is 24002101.

It can be written as a sum of positive squares in 2 ways, for example, as 39137536 + 62062884 = 6256^2 + 7878^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 101200397 and 101200406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2529991 + ... + 2530030.

It is an arithmetic number, because the mean of its divisors is an integer number (17710077).

Almost surely, 2^101200420 is an apocalyptic number.

101200420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101200420 is an abundant number, since it is smaller than the sum of its proper divisors (111320504).

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

101200420 is a wasteful number, since it uses less digits than its factorization.

101200420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060030 (or 5060028 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 101200420 is about 10059.8419470686. The cubic root of 101200420 is about 466.0087861446.

Adding to 101200420 its reverse (24002101), we get a palindrome (125202521).

The spelling of 101200420 in words is "one hundred one million, two hundred thousand, four hundred twenty".